102123932491 has 8 divisors (see below), whose sum is σ = 116715375584. Its totient is φ = 87533066880.

The previous prime is 102123932483. The next prime is 102123932501. The reversal of 102123932491 is 194239321201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102123932491 - 2³ = 102123932483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102123932491.

It is not an unprimeable number, because it can be changed into a prime (102123932441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345331 + ... + 568771.

It is an arithmetic number, because the mean of its divisors is an integer number (14589421948).

Almost surely, 2^102123932491 is an apocalyptic number.

102123932491 is a deficient number, since it is larger than the sum of its proper divisors (14591443093).

102123932491 is an equidigital number, since it uses as much as digits as its factorization.

102123932491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288741.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 102123932491 in words is "one hundred two billion, one hundred twenty-three million, nine hundred thirty-two thousand, four hundred ninety-one".