42504820 has 24 divisors (see below), whose sum is σ = 89460000. Its totient is φ = 16963872.

The previous prime is 42504817. The next prime is 42504821. The reversal of 42504820 is 2840524.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42504821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7851 + ... + 12109.

It is an arithmetic number, because the mean of its divisors is an integer number (3727500).

Almost surely, 2^42504820 is an apocalyptic number.

It is an amenable number.

42504820 is an abundant number, since it is smaller than the sum of its proper divisors (46955180).

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

42504820 is a wasteful number, since it uses less digits than its factorization.

42504820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767 (or 4765 counting only the distinct ones).

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

The square root of 42504820 is about 6519.5720718464. The cubic root of 42504820 is about 348.9897945308.

The spelling of 42504820 in words is "forty-two million, five hundred four thousand, eight hundred twenty".