40502131400 has 48 divisors (see below), whose sum is σ = 96712539540. Its totient is φ = 15762988800.

The previous prime is 40502131381. The next prime is 40502131441. The reversal of 40502131400 is 413120504.

It can be written as a sum of positive squares in 6 ways, for example, as 29322452644 + 11179678756 = 171238^2 + 105734^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2729231 + ... + 2744030.

Almost surely, 2^40502131400 is an apocalyptic number.

40502131400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40502131400 is an abundant number, since it is smaller than the sum of its proper divisors (56210408140).

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

40502131400 is a wasteful number, since it uses less digits than its factorization.

40502131400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473314 (or 5473305 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 40502131400 its reverse (413120504), we get a palindrome (40915251904).

The spelling of 40502131400 in words is "forty billion, five hundred two million, one hundred thirty-one thousand, four hundred".