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142553031 = 394150497
BaseRepresentation
bin10000111111100…
…10111111000111
3100221020102222220
420133302333013
5242443144111
622051223423
73350452335
oct1037627707
9327212886
10142553031
1173516225
123b8a7b73
13236c240a
1414d0ab55
15c7ace06
hex87f2fc7

142553031 has 8 divisors (see below), whose sum is σ = 190276464. Its totient is φ = 94932480.

The previous prime is 142552981. The next prime is 142553039. The reversal of 142553031 is 130355241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142553031 - 211 = 142550983 is a prime.

It is a super-2 number, since 2×1425530312 = 40642733294573922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142552992 and 142553010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142553039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22426 + ... + 28071.

It is an arithmetic number, because the mean of its divisors is an integer number (23784558).

Almost surely, 2142553031 is an apocalyptic number.

142553031 is a deficient number, since it is larger than the sum of its proper divisors (47723433).

142553031 is an equidigital number, since it uses as much as digits as its factorization.

142553031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51441.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 142553031 is about 11939.5574038571. The cubic root of 142553031 is about 522.3867489566.

The spelling of 142553031 in words is "one hundred forty-two million, five hundred fifty-three thousand, thirty-one".

Divisors: 1 3 941 2823 50497 151491 47517677 142553031