139158320 has 80 divisors (see below), whose sum is σ = 378428160. Its totient is φ = 46593792.

The previous prime is 139158317. The next prime is 139158343. The reversal of 139158320 is 23851931.

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

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 15 ways as a sum of consecutive naturals, for example, 21191 + ... + 26969.

It is an arithmetic number, because the mean of its divisors is an integer number (4730352).

Almost surely, 2^139158320 is an apocalyptic number.

139158320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139158320 is the 9632-nd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139158320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189214080).

139158320 is an abundant number, since it is smaller than the sum of its proper divisors (239269840).

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

139158320 is a wasteful number, since it uses less digits than its factorization.

139158320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5842 (or 5836 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 139158320 is about 11796.5384753325. The cubic root of 139158320 is about 518.2067420602.

The spelling of 139158320 in words is "one hundred thirty-nine million, one hundred fifty-eight thousand, three hundred twenty".