404240100 has 72 divisors (see below), whose sum is σ = 1275939168. Its totient is φ = 97996800.

The previous prime is 404240071. The next prime is 404240149. The reversal of 404240100 is 1042404.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 404240100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57949 + ... + 64548.

Almost surely, 2^404240100 is an apocalyptic number.

It is an amenable number.

404240100 is an abundant number, since it is smaller than the sum of its proper divisors (871699068).

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

404240100 is a wasteful number, since it uses less digits than its factorization.

404240100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122525 (or 122518 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 404240100 is about 20105.7230658338. The cubic root of 404240100 is about 739.4005981300.

Adding to 404240100 its reverse (1042404), we get a palindrome (405282504).

The spelling of 404240100 in words is "four hundred four million, two hundred forty thousand, one hundred".