139148720 has 20 divisors (see below), whose sum is σ = 323520960. Its totient is φ = 55659456.

The previous prime is 139148707. The next prime is 139148767. The reversal of 139148720 is 27841931.

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 869600 + ... + 869759.

It is an arithmetic number, because the mean of its divisors is an integer number (16176048).

Almost surely, 2^139148720 is an apocalyptic number.

139148720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139148720 is an abundant number, since it is smaller than the sum of its proper divisors (184372240).

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

139148720 is a wasteful number, since it uses less digits than its factorization.

139148720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739372 (or 1739366 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 139148720 is about 11796.1315692900. The cubic root of 139148720 is about 518.1948254194.

The spelling of 139148720 in words is "one hundred thirty-nine million, one hundred forty-eight thousand, seven hundred twenty".