82428123 has 4 divisors (see below), whose sum is σ = 109904168. Its totient is φ = 54952080.

The previous prime is 82428107. The next prime is 82428127. The reversal of 82428123 is 32182428.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82428123 - 2⁴ = 82428107 is a prime.

It is a super-2 number, since 2×82428123² = 13588790922606258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82428127) 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, 13738018 + ... + 13738023.

It is an arithmetic number, because the mean of its divisors is an integer number (27476042).

Almost surely, 2^82428123 is an apocalyptic number.

82428123 is a deficient number, since it is larger than the sum of its proper divisors (27476045).

82428123 is a wasteful number, since it uses less digits than its factorization.

82428123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27476044.

The product of its digits is 6144, while the sum is 30.

The square root of 82428123 is about 9078.9935014846. The cubic root of 82428123 is about 435.2029228956.

The spelling of 82428123 in words is "eighty-two million, four hundred twenty-eight thousand, one hundred twenty-three".