102372979 has 4 divisors (see below), whose sum is σ = 102513376. Its totient is φ = 102232584.

The previous prime is 102372971. The next prime is 102372989. The reversal of 102372979 is 979273201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979273201 = 821 ⋅1192781.

It is a cyclic number.

It is not a de Polignac number, because 102372979 - 2³ = 102372971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102372971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69099 + ... + 70564.

It is an arithmetic number, because the mean of its divisors is an integer number (25628344).

Almost surely, 2^102372979 is an apocalyptic number.

102372979 is a deficient number, since it is larger than the sum of its proper divisors (140397).

102372979 is an equidigital number, since it uses as much as digits as its factorization.

102372979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140396.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 102372979 is about 10117.9533009399. The cubic root of 102372979 is about 467.8016835130.

The spelling of 102372979 in words is "one hundred two million, three hundred seventy-two thousand, nine hundred seventy-nine".