123247953642 has 64 divisors (see below), whose sum is σ = 290780596224. Its totient is φ = 34403024640.

The previous prime is 123247953623. The next prime is 123247953643. The reversal of 123247953642 is 246359742321.

It is a junction number, because it is equal to n+sod(n) for n = 123247953591 and 123247953600.

It is not an unprimeable number, because it can be changed into a prime (123247953643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1115848 + ... + 1221315.

It is an arithmetic number, because the mean of its divisors is an integer number (4543446816).

Almost surely, 2^123247953642 is an apocalyptic number.

123247953642 is an abundant number, since it is smaller than the sum of its proper divisors (167532642582).

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

123247953642 is a wasteful number, since it uses less digits than its factorization.

123247953642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337243.

The product of its digits is 2177280, while the sum is 48.

The spelling of 123247953642 in words is "one hundred twenty-three billion, two hundred forty-seven million, nine hundred fifty-three thousand, six hundred forty-two".