139741440 has 144 divisors (see below), whose sum is σ = 451118976. Its totient is φ = 36864000.

The previous prime is 139741429. The next prime is 139741451. The reversal of 139741440 is 44147931.

It is an interprime number because it is at equal distance from previous prime (139741429) and next prime (139741451).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579720 + ... + 579960.

Almost surely, 2^139741440 is an apocalyptic number.

139741440 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 139741440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225559488).

139741440 is an abundant number, since it is smaller than the sum of its proper divisors (311377536).

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

139741440 is a wasteful number, since it uses less digits than its factorization.

139741440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 139741440 is about 11821.2283625688. The cubic root of 139741440 is about 518.9295533669.

The spelling of 139741440 in words is "one hundred thirty-nine million, seven hundred forty-one thousand, four hundred forty".