138572701 has 8 divisors (see below), whose sum is σ = 143587800. Its totient is φ = 133573440.

The previous prime is 138572699. The next prime is 138572711. The reversal of 138572701 is 107275831.

It can be written as a sum of positive squares in 4 ways, for example, as 89208025 + 49364676 = 9445^2 + 7026^2 .

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 138572701 - 2¹ = 138572699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138572711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15555 + ... + 22783.

It is an arithmetic number, because the mean of its divisors is an integer number (17948475).

Almost surely, 2^138572701 is an apocalyptic number.

It is an amenable number.

138572701 is a deficient number, since it is larger than the sum of its proper divisors (5015099).

138572701 is an equidigital number, since it uses as much as digits as its factorization.

138572701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 138572701 is about 11771.6906602238. The cubic root of 138572701 is about 517.4787980143.

The spelling of 138572701 in words is "one hundred thirty-eight million, five hundred seventy-two thousand, seven hundred one".