123992242 has 16 divisors (see below), whose sum is σ = 204796512. Its totient is φ = 55832320.

The previous prime is 123992221. The next prime is 123992257. The reversal of 123992242 is 242299321.

It is a junction number, because it is equal to n+sod(n) for n = 123992198 and 123992207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23983 + ... + 28690.

It is an arithmetic number, because the mean of its divisors is an integer number (12799782).

Almost surely, 2^123992242 is an apocalyptic number.

123992242 is a deficient number, since it is larger than the sum of its proper divisors (80804270).

123992242 is a wasteful number, since it uses less digits than its factorization.

123992242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52793.

The product of its digits is 15552, while the sum is 34.

The square root of 123992242 is about 11135.1803757281. The cubic root of 123992242 is about 498.6526954686.

It can be divided in two parts, 12399 and 2242, that added together give a palindrome (14641).

The spelling of 123992242 in words is "one hundred twenty-three million, nine hundred ninety-two thousand, two hundred forty-two".