40404302120 has 128 divisors (see below), whose sum is σ = 113785862400. Its totient is φ = 12570494976.

The previous prime is 40404302089. The next prime is 40404302153. The reversal of 40404302120 is 2120340404.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40404302092 and 40404302101.

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, 120692 + ... + 308828.

It is an arithmetic number, because the mean of its divisors is an integer number (888952050).

Almost surely, 2^40404302120 is an apocalyptic number.

40404302120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40404302120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56892931200).

40404302120 is an abundant number, since it is smaller than the sum of its proper divisors (73381560280).

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

40404302120 is a wasteful number, since it uses less digits than its factorization.

40404302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188227 (or 188223 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40404302120 its reverse (2120340404), we get a palindrome (42524642524).

The spelling of 40404302120 in words is "forty billion, four hundred four million, three hundred two thousand, one hundred twenty".