102130239 has 8 divisors (see below), whose sum is σ = 138481920. Its totient is φ = 66932696.

The previous prime is 102130229. The next prime is 102130241. The reversal of 102130239 is 932031201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 102130239 - 2⁵ = 102130207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102130219) 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, 288327 + ... + 288680.

It is an arithmetic number, because the mean of its divisors is an integer number (17310240).

Almost surely, 2^102130239 is an apocalyptic number.

102130239 is a deficient number, since it is larger than the sum of its proper divisors (36351681).

102130239 is an equidigital number, since it uses as much as digits as its factorization.

102130239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577069.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 102130239 is about 10105.9506727472. The cubic root of 102130239 is about 467.4316508121.

The spelling of 102130239 in words is "one hundred two million, one hundred thirty thousand, two hundred thirty-nine".