123120125513239 has 2 divisors, whose sum is σ = 123120125513240. Its totient is φ = 123120125513238.

The previous prime is 123120125513233. The next prime is 123120125513327. The reversal of 123120125513239 is 932315521021321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123120125513239 - 2⁷ = 123120125513111 is a prime.

It is a super-2 number, since 2×123120125513239² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123120125513233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560062756619 + 61560062756620.

It is an arithmetic number, because the mean of its divisors is an integer number (61560062756620).

Almost surely, 2^{123120125513239} is an apocalyptic number.

123120125513239 is a deficient number, since it is larger than the sum of its proper divisors (1).

123120125513239 is an equidigital number, since it uses as much as digits as its factorization.

123120125513239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 123120125513239 in words is "one hundred twenty-three trillion, one hundred twenty billion, one hundred twenty-five million, five hundred thirteen thousand, two hundred thirty-nine".