139425216 has 112 divisors (see below), whose sum is σ = 424379136. Its totient is φ = 39573504.

The previous prime is 139425203. The next prime is 139425227. The reversal of 139425216 is 612524931.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304860 + ... + 305316.

Almost surely, 2^139425216 is an apocalyptic number.

139425216 is a gapful number since it is divisible by the number (16) 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 139425216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212189568).

139425216 is an abundant number, since it is smaller than the sum of its proper divisors (284953920).

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

139425216 is a wasteful number, since it uses less digits than its factorization.

139425216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 696 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 139425216 is about 11807.8455274449. The cubic root of 139425216 is about 518.5378253411.

The spelling of 139425216 in words is "one hundred thirty-nine million, four hundred twenty-five thousand, two hundred sixteen".