42561016 has 16 divisors (see below), whose sum is σ = 82376640. Its totient is φ = 20593920.

The previous prime is 42560977. The next prime is 42561031. The reversal of 42561016 is 61016524.

It is a super-2 number, since 2×42561016² = 3622880165904512, 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 in 3 ways as a sum of consecutive naturals, for example, 85561 + ... + 86056.

It is an arithmetic number, because the mean of its divisors is an integer number (5148540).

Almost surely, 2^42561016 is an apocalyptic number.

It is an amenable number.

42561016 is a deficient number, since it is larger than the sum of its proper divisors (39815624).

42561016 is a wasteful number, since it uses less digits than its factorization.

42561016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171654 (or 171650 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42561016 is about 6523.8804403514. The cubic root of 42561016 is about 349.1435276357.

The spelling of 42561016 in words is "forty-two million, five hundred sixty-one thousand, sixteen".