11491042 has 4 divisors (see below), whose sum is σ = 17236566. Its totient is φ = 5745520.

The previous prime is 11491037. The next prime is 11491043. The reversal of 11491042 is 24019411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24019411 = 13 ⋅1847647.

It can be written as a sum of positive squares in only one way, i.e., 10896601 + 594441 = 3301^2 + 771^2 .

It is not an unprimeable number, because it can be changed into a prime (11491043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2872759 + ... + 2872762.

Almost surely, 2^11491042 is an apocalyptic number.

11491042 is a deficient number, since it is larger than the sum of its proper divisors (5745524).

11491042 is an equidigital number, since it uses as much as digits as its factorization.

11491042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745523.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11491042 is about 3389.8439492106. The cubic root of 11491042 is about 225.6592484133.

The spelling of 11491042 in words is "eleven million, four hundred ninety-one thousand, forty-two".