102130279 has 2 divisors, whose sum is σ = 102130280. Its totient is φ = 102130278.

The previous prime is 102130261. The next prime is 102130283. The reversal of 102130279 is 972031201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102130279 - 2⁵ = 102130247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102130219) 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 as a sum of consecutive naturals, namely, 51065139 + 51065140.

It is an arithmetic number, because the mean of its divisors is an integer number (51065140).

Almost surely, 2^102130279 is an apocalyptic number.

102130279 is a deficient number, since it is larger than the sum of its proper divisors (1).

102130279 is an equidigital number, since it uses as much as digits as its factorization.

102130279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 102130279 is about 10105.9526517790. The cubic root of 102130279 is about 467.4317118363.

The spelling of 102130279 in words is "one hundred two million, one hundred thirty thousand, two hundred seventy-nine".