139813740 has 144 divisors (see below), whose sum is σ = 466161696. Its totient is φ = 33638400.

The previous prime is 139813733. The next prime is 139813741. The reversal of 139813740 is 47318931.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 139813695 and 139813704.

It is not an unprimeable number, because it can be changed into a prime (139813741) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 477034 + ... + 477326.

It is an arithmetic number, because the mean of its divisors is an integer number (3237234).

Almost surely, 2^139813740 is an apocalyptic number.

139813740 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 139813740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233080848).

139813740 is an abundant number, since it is smaller than the sum of its proper divisors (326347956).

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

139813740 is a wasteful number, since it uses less digits than its factorization.

139813740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 139813740 is about 11824.2860249573. The cubic root of 139813740 is about 519.0190332379.

The spelling of 139813740 in words is "one hundred thirty-nine million, eight hundred thirteen thousand, seven hundred forty".