138922120 has 16 divisors (see below), whose sum is σ = 312574860. Its totient is φ = 55568832.

The previous prime is 138922111. The next prime is 138922159. The reversal of 138922120 is 21229831.

It can be written as a sum of positive squares in 2 ways, for example, as 134977924 + 3944196 = 11618^2 + 1986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736487 + ... + 1736566.

Almost surely, 2^138922120 is an apocalyptic number.

138922120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138922120 is an abundant number, since it is smaller than the sum of its proper divisors (173652740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138922120 is a wasteful number, since it uses less digits than its factorization.

138922120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473064 (or 3473060 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 138922120 is about 11786.5228120935. The cubic root of 138922120 is about 517.9133837475.

The spelling of 138922120 in words is "one hundred thirty-eight million, nine hundred twenty-two thousand, one hundred twenty".