139741056 has 384 divisors, whose sum is σ = 522762240. Its totient is φ = 34836480.

The previous prime is 139741039. The next prime is 139741061. The reversal of 139741056 is 650147931.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 139741056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3249771 + ... + 3249813.

It is an arithmetic number, because the mean of its divisors is an integer number (1361360).

Almost surely, 2^139741056 is an apocalyptic number.

139741056 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 139741056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261381120).

139741056 is an abundant number, since it is smaller than the sum of its proper divisors (383021184).

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

139741056 is a wasteful number, since it uses less digits than its factorization.

139741056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 139741056 is about 11821.2121205907. The cubic root of 139741056 is about 518.9290780387.

Adding to 139741056 its reverse (650147931), we get a palindrome (789888987).

The spelling of 139741056 in words is "one hundred thirty-nine million, seven hundred forty-one thousand, fifty-six".