42820504 has 16 divisors (see below), whose sum is σ = 81487800. Its totient is φ = 21090432.

The previous prime is 42820493. The next prime is 42820513. The reversal of 42820504 is 40502824.

It is a happy number.

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, 39409 + ... + 40480.

Almost surely, 2^42820504 is an apocalyptic number.

It is an amenable number.

42820504 is a deficient number, since it is larger than the sum of its proper divisors (38667296).

42820504 is a wasteful number, since it uses less digits than its factorization.

42820504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79962 (or 79958 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 42820504 is about 6543.7377698071. The cubic root of 42820504 is about 349.8516486932.

The spelling of 42820504 in words is "forty-two million, eight hundred twenty thousand, five hundred four".