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120251413 = 132790619
BaseRepresentation
bin1110010101011…
…10010000010101
322101021101221001
413022232100111
5221241021123
615533223301
72660056132
oct712562025
9271241831
10120251413
1161973737
1234331b31
131bbb44a9
1411d83589
15a8550ad
hex72ae415

120251413 has 4 divisors (see below), whose sum is σ = 120343360. Its totient is φ = 120159468.

The previous prime is 120251407. The next prime is 120251423. The reversal of 120251413 is 314152021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314152021 = 431728891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120251413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120251423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43983 + ... + 46636.

It is an arithmetic number, because the mean of its divisors is an integer number (30085840).

Almost surely, 2120251413 is an apocalyptic number.

It is an amenable number.

120251413 is a deficient number, since it is larger than the sum of its proper divisors (91947).

120251413 is an equidigital number, since it uses as much as digits as its factorization.

120251413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91946.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 120251413 is about 10965.9205267957. The cubic root of 120251413 is about 493.5866400128.

The spelling of 120251413 in words is "one hundred twenty million, two hundred fifty-one thousand, four hundred thirteen".

Divisors: 1 1327 90619 120251413