102342131440 has 80 divisors (see below), whose sum is σ = 240634098432. Its totient is φ = 40475123712.

The previous prime is 102342131393. The next prime is 102342131471. The reversal of 102342131440 is 44131243201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 8662017 + ... + 8673823.

Almost surely, 2^102342131440 is an apocalyptic number.

102342131440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102342131440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120317049216).

102342131440 is an abundant number, since it is smaller than the sum of its proper divisors (138291966992).

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

102342131440 is a wasteful number, since it uses less digits than its factorization.

102342131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13034 (or 13028 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 102342131440 its reverse (44131243201), we get a palindrome (146473374641).

The spelling of 102342131440 in words is "one hundred two billion, three hundred forty-two million, one hundred thirty-one thousand, four hundred forty".