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1024421131 = 1099398359
BaseRepresentation
bin111101000011110…
…110110100001011
32122101121222121101
4331003312310023
54044222434011
6245352522231
734246302346
oct7503666413
92571558541
101024421131
11486293838
122470b0377
1313430aa66
149a0a745d
155ee072c1
hex3d0f6d0b

1024421131 has 4 divisors (see below), whose sum is σ = 1033819600. Its totient is φ = 1015022664.

The previous prime is 1024421113. The next prime is 1024421137. The reversal of 1024421131 is 1311244201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311244201 = 7691705129.

It is a cyclic number.

It is not a de Polignac number, because 1024421131 - 29 = 1024420619 is a prime.

It is a super-2 number, since 2×10244211312 = 2098877307278638322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1024421099 and 1024421108.

It is not an unprimeable number, because it can be changed into a prime (1024421137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4699071 + ... + 4699288.

It is an arithmetic number, because the mean of its divisors is an integer number (258454900).

Almost surely, 21024421131 is an apocalyptic number.

1024421131 is a deficient number, since it is larger than the sum of its proper divisors (9398469).

1024421131 is an equidigital number, since it uses as much as digits as its factorization.

1024421131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398468.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1024421131 is about 32006.5794954725. The cubic root of 1024421131 is about 1008.0749959292.

Adding to 1024421131 its reverse (1311244201), we get a palindrome (2335665332).

It can be divided in two parts, 10244 and 21131, that added together give a triangular number (31375 = T250).

The spelling of 1024421131 in words is "one billion, twenty-four million, four hundred twenty-one thousand, one hundred thirty-one".

Divisors: 1 109 9398359 1024421131