123992572 has 36 divisors (see below), whose sum is σ = 239721328. Its totient is φ = 56073600.

The previous prime is 123992567. The next prime is 123992573. The reversal of 123992572 is 275299321.

It is a super-2 number, since 2×123992572² = 30748315822350368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123992573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116113 + ... + 117175.

Almost surely, 2^123992572 is an apocalyptic number.

It is an amenable number.

123992572 is a deficient number, since it is larger than the sum of its proper divisors (115728756).

123992572 is a wasteful number, since it uses less digits than its factorization.

123992572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 1317 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 123992572 is about 11135.1951936192. The cubic root of 123992572 is about 498.6531378490.

The spelling of 123992572 in words is "one hundred twenty-three million, nine hundred ninety-two thousand, five hundred seventy-two".