139434120 has 96 divisors (see below), whose sum is σ = 517907520. Its totient is φ = 31870080.

The previous prime is 139434109. The next prime is 139434121. The reversal of 139434120 is 21434931.

It is not an unprimeable number, because it can be changed into a prime (139434121) 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 23 ways as a sum of consecutive naturals, for example, 25146 + ... + 30185.

It is an arithmetic number, because the mean of its divisors is an integer number (5394870).

Almost surely, 2^139434120 is an apocalyptic number.

139434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139434120 is an abundant number, since it is smaller than the sum of its proper divisors (378473400).

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

139434120 is a wasteful number, since it uses less digits than its factorization.

139434120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55355 (or 55348 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 139434120 is about 11808.2225588782. Note that the first 3 decimals coincide. The cubic root of 139434120 is about 518.5488634269.

The spelling of 139434120 in words is "one hundred thirty-nine million, four hundred thirty-four thousand, one hundred twenty".