139168140 has 24 divisors (see below), whose sum is σ = 389670960. Its totient is φ = 37111488.

The previous prime is 139168123. The next prime is 139168153. The reversal of 139168140 is 41861931.

It is an unprimeable number.

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, 1159675 + ... + 1159794.

It is an arithmetic number, because the mean of its divisors is an integer number (16236290).

Almost surely, 2^139168140 is an apocalyptic number.

139168140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139168140 is an abundant number, since it is smaller than the sum of its proper divisors (250502820).

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

139168140 is a wasteful number, since it uses less digits than its factorization.

139168140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319481 (or 2319479 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 139168140 is about 11796.9546917838. The cubic root of 139168140 is about 518.2189312236.

The spelling of 139168140 in words is "one hundred thirty-nine million, one hundred sixty-eight thousand, one hundred forty".