139845740 has 24 divisors (see below), whose sum is σ = 310951872. Its totient is φ = 52647680.

The previous prime is 139845737. The next prime is 139845763. The reversal of 139845740 is 47548931.

It is a super-2 number, since 2×139845740² = 39113661992295200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205316 + ... + 205995.

It is an arithmetic number, because the mean of its divisors is an integer number (12956328).

Almost surely, 2^139845740 is an apocalyptic number.

139845740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139845740 is an abundant number, since it is smaller than the sum of its proper divisors (171106132).

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

139845740 is a wasteful number, since it uses less digits than its factorization.

139845740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411337 (or 411335 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 139845740 is about 11825.6390947805. The cubic root of 139845740 is about 519.0586272056.

The spelling of 139845740 in words is "one hundred thirty-nine million, eight hundred forty-five thousand, seven hundred forty".