123242351125402 has 4 divisors (see below), whose sum is σ = 184863526688106. Its totient is φ = 61621175562700.

The previous prime is 123242351125363. The next prime is 123242351125403. The reversal of 123242351125402 is 204521153242321.

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

It can be written as a sum of positive squares in only one way, i.e., 104192260066521 + 19050091058881 = 10207461^2 + 4364641^2 .

It is a super-2 number, since 2×123242351125402² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123242351125403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30810587781349 + ... + 30810587781352.

Almost surely, 2^{123242351125402} is an apocalyptic number.

123242351125402 is a deficient number, since it is larger than the sum of its proper divisors (61621175562704).

123242351125402 is an equidigital number, since it uses as much as digits as its factorization.

123242351125402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61621175562703.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 123242351125402 in words is "one hundred twenty-three trillion, two hundred forty-two billion, three hundred fifty-one million, one hundred twenty-five thousand, four hundred two".