102040140408 has 16 divisors (see below), whose sum is σ = 255100351080. Its totient is φ = 34013380128.

The previous prime is 102040140337. The next prime is 102040140409. The reversal of 102040140408 is 804041040201.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 4251672517 = 102040140408 / (1 + 0 + 2 + 0 + 4 + 0 + 1 + 4 + 0 + 4 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102040140409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125836235 + ... + 2125836282.

Almost surely, 2^102040140408 is an apocalyptic number.

It is an amenable number.

102040140408 is an abundant number, since it is smaller than the sum of its proper divisors (153060210672).

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

102040140408 is a wasteful number, since it uses less digits than its factorization.

102040140408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251672526 (or 4251672522 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 102040140408 its reverse (804041040201), we get a palindrome (906081180609).

The spelling of 102040140408 in words is "one hundred two billion, forty million, one hundred forty thousand, four hundred eight".