139094520 has 128 divisors (see below), whose sum is σ = 435456000. Its totient is φ = 35504640.

The previous prime is 139094503. The next prime is 139094531. The reversal of 139094520 is 25490931.

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 31 ways as a sum of consecutive naturals, for example, 516946 + ... + 517214.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^139094520 is an apocalyptic number.

139094520 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 139094520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217728000).

139094520 is an abundant number, since it is smaller than the sum of its proper divisors (296361480).

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

139094520 is a wasteful number, since it uses less digits than its factorization.

139094520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 139094520 is about 11793.8339822129. The cubic root of 139094520 is about 518.1275357671.

The spelling of 139094520 in words is "one hundred thirty-nine million, ninety-four thousand, five hundred twenty".