102323140440 has 64 divisors (see below), whose sum is σ = 306999041760. Its totient is φ = 27283537920.

The previous prime is 102323140433. The next prime is 102323140459. The reversal of 102323140440 is 44041323201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 102323140440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1424262 + ... + 1494378.

Almost surely, 2^102323140440 is an apocalyptic number.

102323140440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102323140440 is an abundant number, since it is smaller than the sum of its proper divisors (204675901320).

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

102323140440 is a wasteful number, since it uses less digits than its factorization.

102323140440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82292 (or 82288 counting only the distinct ones).

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

Adding to 102323140440 its reverse (44041323201), we get a palindrome (146364463641).

The spelling of 102323140440 in words is "one hundred two billion, three hundred twenty-three million, one hundred forty thousand, four hundred forty".