102431140142 has 4 divisors (see below), whose sum is σ = 153646710216. Its totient is φ = 51215570070.

The previous prime is 102431140139. The next prime is 102431140151. The reversal of 102431140142 is 241041134201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607785034 + ... + 25607785037.

It is an arithmetic number, because the mean of its divisors is an integer number (38411677554).

Almost surely, 2^102431140142 is an apocalyptic number.

102431140142 is a deficient number, since it is larger than the sum of its proper divisors (51215570074).

102431140142 is an equidigital number, since it uses as much as digits as its factorization.

102431140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51215570073.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 102431140142 its reverse (241041134201), we get a palindrome (343472274343).

The spelling of 102431140142 in words is "one hundred two billion, four hundred thirty-one million, one hundred forty thousand, one hundred forty-two".