138752374 has 4 divisors (see below), whose sum is σ = 208128564. Its totient is φ = 69376186.

The previous prime is 138752371. The next prime is 138752381. The reversal of 138752374 is 473257831.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138752371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34688092 + ... + 34688095.

It is an arithmetic number, because the mean of its divisors is an integer number (52032141).

Almost surely, 2^138752374 is an apocalyptic number.

138752374 is a deficient number, since it is larger than the sum of its proper divisors (69376190).

138752374 is an equidigital number, since it uses as much as digits as its factorization.

138752374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69376189.

The product of its digits is 141120, while the sum is 40.

The square root of 138752374 is about 11779.3197596466. The cubic root of 138752374 is about 517.7023553041.

The spelling of 138752374 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, three hundred seventy-four".