102242915 has 4 divisors (see below), whose sum is σ = 122691504. Its totient is φ = 81794328.

The previous prime is 102242909. The next prime is 102242923. The reversal of 102242915 is 519242201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519242201 = 37 ⋅14033573.

It is a cyclic number.

It is not a de Polignac number, because 102242915 - 2²² = 98048611 is a prime.

It is a super-2 number, since 2×102242915² = 20907227335394450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10224287 + ... + 10224296.

It is an arithmetic number, because the mean of its divisors is an integer number (30672876).

Almost surely, 2^102242915 is an apocalyptic number.

102242915 is a deficient number, since it is larger than the sum of its proper divisors (20448589).

102242915 is an equidigital number, since it uses as much as digits as its factorization.

102242915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20448588.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 102242915 is about 10111.5238713064. The cubic root of 102242915 is about 467.6034868655.

The spelling of 102242915 in words is "one hundred two million, two hundred forty-two thousand, nine hundred fifteen".