139005740 has 24 divisors (see below), whose sum is σ = 292203072. Its totient is φ = 55546880.

The previous prime is 139005739. The next prime is 139005749. The reversal of 139005740 is 47500931.

It is not an unprimeable number, because it can be changed into a prime (139005749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21485 + ... + 27195.

It is an arithmetic number, because the mean of its divisors is an integer number (12175128).

Almost surely, 2^139005740 is an apocalyptic number.

139005740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139005740 is an abundant number, since it is smaller than the sum of its proper divisors (153197332).

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

139005740 is a wasteful number, since it uses less digits than its factorization.

139005740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937 (or 6935 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 139005740 is about 11790.0695502614. The cubic root of 139005740 is about 518.0172770433.

The spelling of 139005740 in words is "one hundred thirty-nine million, five thousand, seven hundred forty".