11812442 has 4 divisors (see below), whose sum is σ = 17718666. Its totient is φ = 5906220.

The previous prime is 11812403. The next prime is 11812459. The reversal of 11812442 is 24421811.

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

It can be written as a sum of positive squares in only one way, i.e., 10374841 + 1437601 = 3221^2 + 1199^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2953109 + ... + 2953112.

Almost surely, 2^11812442 is an apocalyptic number.

11812442 is a deficient number, since it is larger than the sum of its proper divisors (5906224).

11812442 is an equidigital number, since it uses as much as digits as its factorization.

11812442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906223.

The product of its digits is 512, while the sum is 23.

The square root of 11812442 is about 3436.9233334481. The cubic root of 11812442 is about 227.7438001448.

The spelling of 11812442 in words is "eleven million, eight hundred twelve thousand, four hundred forty-two".