12139126 has 4 divisors (see below), whose sum is σ = 18208692. Its totient is φ = 6069562.

The previous prime is 12139109. The next prime is 12139129. The reversal of 12139126 is 62193121.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12139126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3034780 + ... + 3034783.

It is an arithmetic number, because the mean of its divisors is an integer number (4552173).

Almost surely, 2^12139126 is an apocalyptic number.

12139126 is a deficient number, since it is larger than the sum of its proper divisors (6069566).

12139126 is an equidigital number, since it uses as much as digits as its factorization.

12139126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069565.

The product of its digits is 648, while the sum is 25.

The square root of 12139126 is about 3484.1248542496. The cubic root of 12139126 is about 229.8242261303.

The spelling of 12139126 in words is "twelve million, one hundred thirty-nine thousand, one hundred twenty-six".