139007205 has 32 divisors (see below), whose sum is σ = 247852800. Its totient is φ = 73918656.

The previous prime is 139007203. The next prime is 139007207. The reversal of 139007205 is 502700931.

It is an interprime number because it is at equal distance from previous prime (139007203) and next prime (139007207).

It is not a de Polignac number, because 139007205 - 2¹ = 139007203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139007203) 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 31 ways as a sum of consecutive naturals, for example, 51192 + ... + 53838.

It is an arithmetic number, because the mean of its divisors is an integer number (7745400).

Almost surely, 2^139007205 is an apocalyptic number.

139007205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139007205 is a deficient number, since it is larger than the sum of its proper divisors (108845595).

139007205 is a wasteful number, since it uses less digits than its factorization.

139007205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 139007205 is about 11790.1316786540. The cubic root of 139007205 is about 518.0190968546.

139007205 divided by its sum of digits (27) gives a palindrome (5148415).

The spelling of 139007205 in words is "one hundred thirty-nine million, seven thousand, two hundred five".