42790530 has 32 divisors (see below), whose sum is σ = 108739584. Its totient is φ = 10739456.

The previous prime is 42790529. The next prime is 42790549. The reversal of 42790530 is 3509724.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41442 + ... + 42461.

It is an arithmetic number, because the mean of its divisors is an integer number (3398112).

Almost surely, 2^42790530 is an apocalyptic number.

42790530 is an abundant number, since it is smaller than the sum of its proper divisors (65949054).

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

42790530 is a wasteful number, since it uses less digits than its factorization.

42790530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83930.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 42790530 is about 6541.4470876099. The cubic root of 42790530 is about 349.7699985482.

The spelling of 42790530 in words is "forty-two million, seven hundred ninety thousand, five hundred thirty".