42453992 has 24 divisors (see below), whose sum is σ = 92598210. Its totient is φ = 18194400.

The previous prime is 42453977. The next prime is 42454001. The reversal of 42453992 is 29935424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26977636 + 15476356 = 5194^2 + 3934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53759 + ... + 54542.

Almost surely, 2^42453992 is an apocalyptic number.

It is an amenable number.

42453992 is an abundant number, since it is smaller than the sum of its proper divisors (50144218).

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

42453992 is a wasteful number, since it uses less digits than its factorization.

42453992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108321 (or 108310 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 42453992 is about 6515.6727971868. The cubic root of 42453992 is about 348.8506296971.

The spelling of 42453992 in words is "forty-two million, four hundred fifty-three thousand, nine hundred ninety-two".