42085020 has 24 divisors (see below), whose sum is σ = 117838224. Its totient is φ = 11222656.

The previous prime is 42085007. The next prime is 42085049. The reversal of 42085020 is 2058024.

It is a super-2 number, since 2×42085020² = 3542297816800800, 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 7 ways as a sum of consecutive naturals, for example, 350649 + ... + 350768.

It is an arithmetic number, because the mean of its divisors is an integer number (4909926).

Almost surely, 2^42085020 is an apocalyptic number.

It is an amenable number.

42085020 is an abundant number, since it is smaller than the sum of its proper divisors (75753204).

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

42085020 is a wasteful number, since it uses less digits than its factorization.

42085020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701429 (or 701427 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42085020 is about 6487.2968176275. The cubic root of 42085020 is about 347.8370554376.

The spelling of 42085020 in words is "forty-two million, eighty-five thousand, twenty".