139045738 has 16 divisors (see below), whose sum is σ = 225497160. Its totient is φ = 63922176.

The previous prime is 139045729. The next prime is 139045747. The reversal of 139045738 is 837540931.

It is an interprime number because it is at equal distance from previous prime (139045729) and next prime (139045747).

It can be written as a sum of positive squares in 4 ways, for example, as 119180889 + 19864849 = 10917^2 + 4457^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139045738.

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 7 ways as a sum of consecutive naturals, for example, 3723 + ... + 17086.

Almost surely, 2^139045738 is an apocalyptic number.

139045738 is a deficient number, since it is larger than the sum of its proper divisors (86451422).

139045738 is a wasteful number, since it uses less digits than its factorization.

139045738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21081.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 139045738 is about 11791.7656862745. The cubic root of 139045738 is about 518.0669576490.

The spelling of 139045738 in words is "one hundred thirty-nine million, forty-five thousand, seven hundred thirty-eight".