42204840 has 32 divisors (see below), whose sum is σ = 126614880. Its totient is φ = 11254592.

The previous prime is 42204823. The next prime is 42204893. The reversal of 42204840 is 4840224.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42204840.

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, 175734 + ... + 175973.

It is an arithmetic number, because the mean of its divisors is an integer number (3956715).

Almost surely, 2^42204840 is an apocalyptic number.

42204840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42204840 is an abundant number, since it is smaller than the sum of its proper divisors (84410040).

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

42204840 is a wasteful number, since it uses less digits than its factorization.

42204840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351721 (or 351717 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 42204840 is about 6496.5252250722. The cubic root of 42204840 is about 348.1668508918.

The spelling of 42204840 in words is "forty-two million, two hundred four thousand, eight hundred forty".