139867740 has 72 divisors (see below), whose sum is σ = 446606160. Its totient is φ = 35334144.

The previous prime is 139867711. The next prime is 139867757. The reversal of 139867740 is 47768931.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 17029 + ... + 23868.

Almost surely, 2^139867740 is an apocalyptic number.

139867740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139867740 is an abundant number, since it is smaller than the sum of its proper divisors (306738420).

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

139867740 is a wasteful number, since it uses less digits than its factorization.

139867740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40931 (or 40926 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 139867740 is about 11826.5692404856. The cubic root of 139867740 is about 519.0858445548.

The spelling of 139867740 in words is "one hundred thirty-nine million, eight hundred sixty-seven thousand, seven hundred forty".