12091942 has 8 divisors (see below), whose sum is σ = 19092600. Its totient is φ = 5727744.

The previous prime is 12091907. The next prime is 12091943. The reversal of 12091942 is 24919021.

It is a happy number.

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

It is a super-2 number, since 2×12091942² = 292430122662728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12091942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12091943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159067 + ... + 159142.

It is an arithmetic number, because the mean of its divisors is an integer number (2386575).

Almost surely, 2^12091942 is an apocalyptic number.

12091942 is a deficient number, since it is larger than the sum of its proper divisors (7000658).

12091942 is a wasteful number, since it uses less digits than its factorization.

12091942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318230.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12091942 is about 3477.3469772227. The cubic root of 12091942 is about 229.5260688408.

The spelling of 12091942 in words is "twelve million, ninety-one thousand, nine hundred forty-two".