102432839 has 4 divisors (see below), whose sum is σ = 102453456. Its totient is φ = 102412224.

The previous prime is 102432829. The next prime is 102432893. The reversal of 102432839 is 938234201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938234201 = 41 ⋅22883761.

It is a cyclic number.

It is not a de Polignac number, because 102432839 - 2²⁴ = 85655623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102432809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2222 + ... + 14484.

It is an arithmetic number, because the mean of its divisors is an integer number (25613364).

Almost surely, 2^102432839 is an apocalyptic number.

102432839 is a deficient number, since it is larger than the sum of its proper divisors (20617).

102432839 is an equidigital number, since it uses as much as digits as its factorization.

102432839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20616.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 102432839 is about 10120.9109767846. The cubic root of 102432839 is about 467.8928441327.

The spelling of 102432839 in words is "one hundred two million, four hundred thirty-two thousand, eight hundred thirty-nine".