123251013242419 has 4 divisors (see below), whose sum is σ = 123251063475160. Its totient is φ = 123250963009680.

The previous prime is 123251013242411. The next prime is 123251013242429. The reversal of 123251013242419 is 914242310152321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123251013242419 - 2³ = 123251013242411 is a prime.

It is a super-2 number, since 2×123251013242419² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123251013242411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21236154 + ... + 26409775.

It is an arithmetic number, because the mean of its divisors is an integer number (30812765868790).

Almost surely, 2^{123251013242419} is an apocalyptic number.

123251013242419 is a deficient number, since it is larger than the sum of its proper divisors (50232741).

123251013242419 is an equidigital number, since it uses as much as digits as its factorization.

123251013242419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50232740.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 123251013242419 in words is "one hundred twenty-three trillion, two hundred fifty-one billion, thirteen million, two hundred forty-two thousand, four hundred nineteen".