139045740 has 48 divisors (see below), whose sum is σ = 397619712. Its totient is φ = 36289216.

The previous prime is 139045729. The next prime is 139045747. The reversal of 139045740 is 47540931.

It is not an unprimeable number, because it can be changed into a prime (139045747) 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 15 ways as a sum of consecutive naturals, for example, 21834 + ... + 27473.

It is an arithmetic number, because the mean of its divisors is an integer number (8283744).

Almost surely, 2^139045740 is an apocalyptic number.

139045740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139045740 is an abundant number, since it is smaller than the sum of its proper divisors (258573972).

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

139045740 is a wasteful number, since it uses less digits than its factorization.

139045740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49366 (or 49364 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 139045740 is about 11791.7657710794. The cubic root of 139045740 is about 518.0669601329.

The spelling of 139045740 in words is "one hundred thirty-nine million, forty-five thousand, seven hundred forty".