138426375 has 16 divisors (see below), whose sum is σ = 230342112. Its totient is φ = 73827200.

The previous prime is 138426349. The next prime is 138426383. The reversal of 138426375 is 573624831.

It is not a de Polignac number, because 138426375 - 2⁶ = 138426311 is a prime.

It is a super-2 number, since 2×138426375² = 38323722591281250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184194 + ... + 184943.

It is an arithmetic number, because the mean of its divisors is an integer number (14396382).

Almost surely, 2^138426375 is an apocalyptic number.

138426375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138426375 is a deficient number, since it is larger than the sum of its proper divisors (91915737).

138426375 is an equidigital number, since it uses as much as digits as its factorization.

138426375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369155 (or 369145 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 138426375 is about 11765.4738536108. The cubic root of 138426375 is about 517.2965897580.

The spelling of 138426375 in words is "one hundred thirty-eight million, four hundred twenty-six thousand, three hundred seventy-five".