102123932489 has 4 divisors (see below), whose sum is σ = 102142783440. Its totient is φ = 102105081540.

The previous prime is 102123932483. The next prime is 102123932501. The reversal of 102123932489 is 984239321201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984239321201 = 3257 ⋅302191993.

It is a cyclic number.

It is not a de Polignac number, because 102123932489 - 2¹² = 102123928393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102123932483) 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, 9417347 + ... + 9428184.

It is an arithmetic number, because the mean of its divisors is an integer number (25535695860).

Almost surely, 2^102123932489 is an apocalyptic number.

It is an amenable number.

102123932489 is a deficient number, since it is larger than the sum of its proper divisors (18850951).

102123932489 is an equidigital number, since it uses as much as digits as its factorization.

102123932489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18850950.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 102123932489 in words is "one hundred two billion, one hundred twenty-three million, nine hundred thirty-two thousand, four hundred eighty-nine".