102540432424 has 16 divisors (see below), whose sum is σ = 192267047700. Its totient is φ = 51269219712.

The previous prime is 102540432413. The next prime is 102540432551. The reversal of 102540432424 is 424234045201.

It can be written as a sum of positive squares in 2 ways, for example, as 102539567524 + 864900 = 320218^2 + 930^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492682 + ... + 669190.

Almost surely, 2^102540432424 is an apocalyptic number.

It is an amenable number.

102540432424 is a deficient number, since it is larger than the sum of its proper divisors (89726615276).

102540432424 is a wasteful number, since it uses less digits than its factorization.

102540432424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249132 (or 249128 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 102540432424 its reverse (424234045201), we get a palindrome (526774477625).

The spelling of 102540432424 in words is "one hundred two billion, five hundred forty million, four hundred thirty-two thousand, four hundred twenty-four".