139142160 has 120 divisors (see below), whose sum is σ = 470784600. Its totient is φ = 36827136.

The previous prime is 139142153. The next prime is 139142221. The reversal of 139142160 is 61241931.

It can be written as a sum of positive squares in 4 ways, for example, as 28387584 + 110754576 = 5328^2 + 10524^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106632 + ... + 107928.

It is an arithmetic number, because the mean of its divisors is an integer number (3923205).

Almost surely, 2^139142160 is an apocalyptic number.

139142160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139142160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235392300).

139142160 is an abundant number, since it is smaller than the sum of its proper divisors (331642440).

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

139142160 is a wasteful number, since it uses less digits than its factorization.

139142160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1456 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 139142160 is about 11795.8535087547. The cubic root of 139142160 is about 518.1866820663.

The spelling of 139142160 in words is "one hundred thirty-nine million, one hundred forty-two thousand, one hundred sixty".