100402331240 has 64 divisors (see below), whose sum is σ = 232088792400. Its totient is φ = 39062366208.

The previous prime is 100402331221. The next prime is 100402331303. The reversal of 100402331240 is 42133204001.

It can be written as a sum of positive squares in 8 ways, for example, as 94872624196 + 5529707044 = 308014^2 + 74362^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5195516 + ... + 5214804.

Almost surely, 2^100402331240 is an apocalyptic number.

100402331240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100402331240 is an abundant number, since it is smaller than the sum of its proper divisors (131686461160).

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

100402331240 is a wasteful number, since it uses less digits than its factorization.

100402331240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22854 (or 22850 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 100402331240 its reverse (42133204001), we get a palindrome (142535535241).

The spelling of 100402331240 in words is "one hundred billion, four hundred two million, three hundred thirty-one thousand, two hundred forty".