139042120 has 32 divisors (see below), whose sum is σ = 357537600. Its totient is φ = 47671488.

The previous prime is 139042109. The next prime is 139042129. The reversal of 139042120 is 21240931.

It is a super-2 number, since 2×139042120² = 38665422268188800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139042091 and 139042100.

It is not an unprimeable number, because it can be changed into a prime (139042129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248010 + ... + 248569.

It is an arithmetic number, because the mean of its divisors is an integer number (11173050).

Almost surely, 2^139042120 is an apocalyptic number.

139042120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139042120 is an abundant number, since it is smaller than the sum of its proper divisors (218495480).

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

139042120 is a wasteful number, since it uses less digits than its factorization.

139042120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496597 (or 496593 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 139042120 is about 11791.6122731372. The cubic root of 139042120 is about 518.0624642055.

The spelling of 139042120 in words is "one hundred thirty-nine million, forty-two thousand, one hundred twenty".