139043505 has 16 divisors (see below), whose sum is σ = 227896704. Its totient is φ = 72347520.

The previous prime is 139043497. The next prime is 139043519. The reversal of 139043505 is 505340931.

It is not a de Polignac number, because 139043505 - 2³ = 139043497 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 112429 + ... + 113658.

It is an arithmetic number, because the mean of its divisors is an integer number (14243544).

Almost surely, 2^139043505 is an apocalyptic number.

139043505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139043505 is a deficient number, since it is larger than the sum of its proper divisors (88853199).

139043505 is a wasteful number, since it uses less digits than its factorization.

139043505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226136.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 139043505 is about 11791.6710011771. The cubic root of 139043505 is about 518.0641843416.

The spelling of 139043505 in words is "one hundred thirty-nine million, forty-three thousand, five hundred five".