12139065 has 48 divisors (see below), whose sum is σ = 22259328. Its totient is φ = 6345216.

The previous prime is 12139051. The next prime is 12139103. The reversal of 12139065 is 56093121.

It is not a de Polignac number, because 12139065 - 2⁵ = 12139033 is a prime.

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

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 47 ways as a sum of consecutive naturals, for example, 117804 + ... + 117906.

It is an arithmetic number, because the mean of its divisors is an integer number (463736).

Almost surely, 2^12139065 is an apocalyptic number.

12139065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12139065 is a deficient number, since it is larger than the sum of its proper divisors (10120263).

12139065 is an equidigital number, since it uses as much as digits as its factorization.

12139065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12139065 is about 3484.1161002469. The cubic root of 12139065 is about 229.8238411684.

The spelling of 12139065 in words is "twelve million, one hundred thirty-nine thousand, sixty-five".