138023234 has 8 divisors (see below), whose sum is σ = 207092028. Its totient is φ = 68992560.

The previous prime is 138023231. The next prime is 138023257. The reversal of 138023234 is 432320831.

It can be written as a sum of positive squares in 2 ways, for example, as 95160025 + 42863209 = 9755^2 + 6547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (138023231) 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, 2624 + ... + 16820.

Almost surely, 2^138023234 is an apocalyptic number.

138023234 is a deficient number, since it is larger than the sum of its proper divisors (69068794).

138023234 is a wasteful number, since it uses less digits than its factorization.

138023234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19060.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 138023234 is about 11748.3289875624. The cubic root of 138023234 is about 516.7939248560.

The spelling of 138023234 in words is "one hundred thirty-eight million, twenty-three thousand, two hundred thirty-four".