12126919 has 8 divisors (see below), whose sum is σ = 14094720. Its totient is φ = 10217976.

The previous prime is 12126913. The next prime is 12126923. The reversal of 12126919 is 91962121.

12126919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12126919 - 2⁵ = 12126887 is a prime.

It is a super-2 number, since 2×12126919² = 294124328865122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14269 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (1761840).

Almost surely, 2^12126919 is an apocalyptic number.

12126919 is a deficient number, since it is larger than the sum of its proper divisors (1967801).

12126919 is an equidigital number, since it uses as much as digits as its factorization.

12126919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29429.

The product of its digits is 1944, while the sum is 31.

The square root of 12126919 is about 3482.3726107354. The cubic root of 12126919 is about 229.7471638762.

The spelling of 12126919 in words is "twelve million, one hundred twenty-six thousand, nine hundred nineteen".