102431340042 has 64 divisors (see below), whose sum is σ = 207583084800. Its totient is φ = 33694272000.

The previous prime is 102431340007. The next prime is 102431340049. The reversal of 102431340042 is 240043134201.

It is a junction number, because it is equal to n+sod(n) for n = 102431339994 and 102431340021.

It is not an unprimeable number, because it can be changed into a prime (102431340049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167098128 + ... + 167098740.

It is an arithmetic number, because the mean of its divisors is an integer number (3243485700).

Almost surely, 2^102431340042 is an apocalyptic number.

102431340042 is an abundant number, since it is smaller than the sum of its proper divisors (105151744758).

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

102431340042 is a wasteful number, since it uses less digits than its factorization.

102431340042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 102431340042 its reverse (240043134201), we get a palindrome (342474474243).

The spelling of 102431340042 in words is "one hundred two billion, four hundred thirty-one million, three hundred forty thousand, forty-two".