102242309 has 8 divisors (see below), whose sum is σ = 113659392. Its totient is φ = 91332720.

The previous prime is 102242303. The next prime is 102242323. The reversal of 102242309 is 903242201.

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 102242309 - 2²⁰ = 101193733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102242303) 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, 126449 + ... + 127254.

It is an arithmetic number, because the mean of its divisors is an integer number (14207424).

Almost surely, 2^102242309 is an apocalyptic number.

It is an amenable number.

102242309 is a deficient number, since it is larger than the sum of its proper divisors (11417083).

102242309 is a wasteful number, since it uses less digits than its factorization.

102242309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253747.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 102242309 is about 10111.4939054523. The cubic root of 102242309 is about 467.6025630256.

The spelling of 102242309 in words is "one hundred two million, two hundred forty-two thousand, three hundred nine".