139880265 has 16 divisors (see below), whose sum is σ = 255781248. Its totient is φ = 63945216.

The previous prime is 139880231. The next prime is 139880281. The reversal of 139880265 is 562088931.

It is not a de Polignac number, because 139880265 - 2⁶ = 139880201 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 665992 + ... + 666201.

It is an arithmetic number, because the mean of its divisors is an integer number (15986328).

Almost surely, 2^139880265 is an apocalyptic number.

139880265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139880265 is a deficient number, since it is larger than the sum of its proper divisors (115900983).

139880265 is a wasteful number, since it uses less digits than its factorization.

139880265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332208.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 139880265 is about 11827.0987566689. The cubic root of 139880265 is about 519.1013386117.

The spelling of 139880265 in words is "one hundred thirty-nine million, eight hundred eighty thousand, two hundred sixty-five".