138825423 has 12 divisors (see below), whose sum is σ = 218755368. Its totient is φ = 84136560.

The previous prime is 138825413. The next prime is 138825433. The reversal of 138825423 is 324528831.

138825423 is a `hidden beast` number, since 1 + 38 + 82 + 542 + 3 = 666.

138825423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138825413) and next prime (138825433).

It is not a de Polignac number, because 138825423 - 2⁹ = 138824911 is a prime.

It is a super-2 number, since 2×138825423² = 38544996142257858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138825413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 701040 + ... + 701237.

It is an arithmetic number, because the mean of its divisors is an integer number (18229614).

Almost surely, 2^138825423 is an apocalyptic number.

138825423 is a deficient number, since it is larger than the sum of its proper divisors (79929945).

138825423 is a wasteful number, since it uses less digits than its factorization.

138825423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402294 (or 1402291 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 138825423 is about 11782.4200824788. The cubic root of 138825423 is about 517.7931909983.

The spelling of 138825423 in words is "one hundred thirty-eight million, eight hundred twenty-five thousand, four hundred twenty-three".