12162491 has 8 divisors (see below), whose sum is σ = 13318464. Its totient is φ = 11014920.

The previous prime is 12162487. The next prime is 12162503. The reversal of 12162491 is 19426121.

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 12162491 - 2² = 12162487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12162491.

It is not an unprimeable number, because it can be changed into a prime (12162401) 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, 1160 + ... + 5066.

It is an arithmetic number, because the mean of its divisors is an integer number (1664808).

Almost surely, 2^12162491 is an apocalyptic number.

12162491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12162491 is a deficient number, since it is larger than the sum of its proper divisors (1155973).

12162491 is a wasteful number, since it uses less digits than its factorization.

12162491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201.

The product of its digits is 864, while the sum is 26.

The square root of 12162491 is about 3487.4763081633. The cubic root of 12162491 is about 229.9715843912.

The spelling of 12162491 in words is "twelve million, one hundred sixty-two thousand, four hundred ninety-one".