12125739 has 8 divisors (see below), whose sum is σ = 16441920. Its totient is φ = 7946696.

The previous prime is 12125731. The next prime is 12125759. The reversal of 12125739 is 93752121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12125739 - 2³ = 12125731 is a prime.

It is a super-2 number, since 2×12125739² = 294067092592242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12125731) 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 7 ways as a sum of consecutive naturals, for example, 34077 + ... + 34430.

It is an arithmetic number, because the mean of its divisors is an integer number (2055240).

Almost surely, 2^12125739 is an apocalyptic number.

12125739 is a deficient number, since it is larger than the sum of its proper divisors (4316181).

12125739 is an equidigital number, since it uses as much as digits as its factorization.

12125739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68569.

The product of its digits is 3780, while the sum is 30.

The square root of 12125739 is about 3482.2031818950. The cubic root of 12125739 is about 229.7397118474.

It can be divided in two parts, 12 and 125739, that added together give a triangular number (125751 = T₅₀₁).

The spelling of 12125739 in words is "twelve million, one hundred twenty-five thousand, seven hundred thirty-nine".