123247623942 has 48 divisors (see below), whose sum is σ = 267922458960. Its totient is φ = 40946472000.

The previous prime is 123247623929. The next prime is 123247623949. The reversal of 123247623942 is 249326742321.

123247623942 is a `hidden beast` number, since 12 + 3 + 2 + 4 + 7 + 623 + 9 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123247623949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6895317 + ... + 6913167.

It is an arithmetic number, because the mean of its divisors is an integer number (5581717895).

Almost surely, 2^123247623942 is an apocalyptic number.

123247623942 is an abundant number, since it is smaller than the sum of its proper divisors (144674835018).

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

123247623942 is a wasteful number, since it uses less digits than its factorization.

123247623942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19109 (or 19106 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The spelling of 123247623942 in words is "one hundred twenty-three billion, two hundred forty-seven million, six hundred twenty-three thousand, nine hundred forty-two".