138752641 has 8 divisors (see below), whose sum is σ = 140263200. Its totient is φ = 137249568.

The previous prime is 138752597. The next prime is 138752671. The reversal of 138752641 is 146257831.

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

It is a cyclic number.

It is not a de Polignac number, because 138752641 - 2²⁵ = 105198209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138752641.

It is not an unprimeable number, because it can be changed into a prime (138752671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40410 + ... + 43708.

It is an arithmetic number, because the mean of its divisors is an integer number (17532900).

Almost surely, 2^138752641 is an apocalyptic number.

It is an amenable number.

138752641 is a deficient number, since it is larger than the sum of its proper divisors (1510559).

138752641 is a wasteful number, since it uses less digits than its factorization.

138752641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743.

The product of its digits is 40320, while the sum is 37.

The square root of 138752641 is about 11779.3310930630. The cubic root of 138752641 is about 517.7026873739.

The spelling of 138752641 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, six hundred forty-one".