40404204120 has 128 divisors (see below), whose sum is σ = 140197962240. Its totient is φ = 9123962880.

The previous prime is 40404204091. The next prime is 40404204131. The reversal of 40404204120 is 2140240404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220041 + ... + 359480.

It is an arithmetic number, because the mean of its divisors is an integer number (1095296580).

Almost surely, 2^40404204120 is an apocalyptic number.

40404204120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40404204120 is an abundant number, since it is smaller than the sum of its proper divisors (99793758120).

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

40404204120 is a wasteful number, since it uses less digits than its factorization.

40404204120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579625 (or 579621 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 40404204120 its reverse (2140240404), we get a palindrome (42544444524).

The spelling of 40404204120 in words is "forty billion, four hundred four million, two hundred four thousand, one hundred twenty".