42561496 has 8 divisors (see below), whose sum is σ = 79802820. Its totient is φ = 21280744.

The previous prime is 42561413. The next prime is 42561503. The reversal of 42561496 is 69416524.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42561496² = 3622961883516032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660086 + ... + 2660101.

Almost surely, 2^42561496 is an apocalyptic number.

It is an amenable number.

42561496 is a deficient number, since it is larger than the sum of its proper divisors (37241324).

42561496 is a wasteful number, since it uses less digits than its factorization.

42561496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320193 (or 5320189 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 42561496 is about 6523.9172281690. The cubic root of 42561496 is about 349.1448401690.

The spelling of 42561496 in words is "forty-two million, five hundred sixty-one thousand, four hundred ninety-six".