138875045 has 8 divisors (see below), whose sum is σ = 167343000. Its totient is φ = 110638080.

The previous prime is 138875021. The next prime is 138875053. The reversal of 138875045 is 540578831.

It can be written as a sum of positive squares in 4 ways, for example, as 14485636 + 124389409 = 3806^2 + 11153^2 .

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

It is not a de Polignac number, because 138875045 - 2¹⁴ = 138858661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138874993 and 138875011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56420 + ... + 58829.

It is an arithmetic number, because the mean of its divisors is an integer number (20917875).

Almost surely, 2^138875045 is an apocalyptic number.

It is an amenable number.

138875045 is a deficient number, since it is larger than the sum of its proper divisors (28467955).

138875045 is a wasteful number, since it uses less digits than its factorization.

138875045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115495.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 138875045 is about 11784.5256586763. The cubic root of 138875045 is about 517.8548772813.

The spelling of 138875045 in words is "one hundred thirty-eight million, eight hundred seventy-five thousand, forty-five".