139145360 has 80 divisors (see below), whose sum is σ = 351644160. Its totient is φ = 51010560.

The previous prime is 139145353. The next prime is 139145371. The reversal of 139145360 is 63541931.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×139145360² = 38722862419059200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45644 + ... + 48596.

It is an arithmetic number, because the mean of its divisors is an integer number (4395552).

Almost surely, 2^139145360 is an apocalyptic number.

139145360 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 139145360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175822080).

139145360 is an abundant number, since it is smaller than the sum of its proper divisors (212498800).

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

139145360 is a wasteful number, since it uses less digits than its factorization.

139145360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016 (or 3010 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 139145360 is about 11795.9891488590. The cubic root of 139145360 is about 518.1906544657.

The spelling of 139145360 in words is "one hundred thirty-nine million, one hundred forty-five thousand, three hundred sixty".