139245568 has 96 divisors (see below), whose sum is σ = 347518080. Its totient is φ = 54190080.

The previous prime is 139245563. The next prime is 139245571. The reversal of 139245568 is 865542931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139245563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157255 + ... + 158137.

It is an arithmetic number, because the mean of its divisors is an integer number (3619980).

Almost surely, 2^139245568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139245568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173759040).

139245568 is an abundant number, since it is smaller than the sum of its proper divisors (208272512).

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

139245568 is an equidigital number, since it uses as much as digits as its factorization.

139245568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 903 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 139245568 is about 11800.2359298448. The cubic root of 139245568 is about 518.3150193474.

The spelling of 139245568 in words is "one hundred thirty-nine million, two hundred forty-five thousand, five hundred sixty-eight".