138122570 has 32 divisors (see below), whose sum is σ = 253186560. Its totient is φ = 54241920.

The previous prime is 138122561. The next prime is 138122587. The reversal of 138122570 is 75221831.

138122570 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 314411 + ... + 314849.

It is an arithmetic number, because the mean of its divisors is an integer number (7912080).

Almost surely, 2^138122570 is an apocalyptic number.

138122570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138122570 is a deficient number, since it is larger than the sum of its proper divisors (115063990).

138122570 is a wasteful number, since it uses less digits than its factorization.

138122570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 138122570 is about 11752.5558922304. Note that the first 3 decimals coincide. The cubic root of 138122570 is about 516.9178748343.

The spelling of 138122570 in words is "one hundred thirty-eight million, one hundred twenty-two thousand, five hundred seventy".