123430576489278 has 16 divisors (see below), whose sum is σ = 246864550726416. Its totient is φ = 41142959205120.

The previous prime is 123430576489249. The next prime is 123430576489279. The reversal of 123430576489278 is 872984675034321.

It is a super-2 number, since 2×123430576489278² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430576489279) 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, 141100453 + ... + 141972528.

It is an arithmetic number, because the mean of its divisors is an integer number (15429034420401).

It is a 1-persistent number, because it is pandigital, but 2⋅123430576489278 = 246861152978556 is not.

Almost surely, 2^{123430576489278} is an apocalyptic number.

123430576489278 is an abundant number, since it is smaller than the sum of its proper divisors (123433974237138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123430576489278 is a wasteful number, since it uses less digits than its factorization.

123430576489278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283145659.

The product of its (nonzero) digits is 487710720, while the sum is 69.

The spelling of 123430576489278 in words is "one hundred twenty-three trillion, four hundred thirty billion, five hundred seventy-six million, four hundred eighty-nine thousand, two hundred seventy-eight".