11242947 has 4 divisors (see below), whose sum is σ = 14990600. Its totient is φ = 7495296.

The previous prime is 11242937. The next prime is 11242951. The reversal of 11242947 is 74924211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74924211 = 3 ⋅24974737.

It is not a de Polignac number, because 11242947 - 2¹⁴ = 11226563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11242937) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1873822 + ... + 1873827.

It is an arithmetic number, because the mean of its divisors is an integer number (3747650).

Almost surely, 2^11242947 is an apocalyptic number.

11242947 is a deficient number, since it is larger than the sum of its proper divisors (3747653).

11242947 is an equidigital number, since it uses as much as digits as its factorization.

11242947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747652.

The product of its digits is 4032, while the sum is 30.

The square root of 11242947 is about 3353.0504022457. The cubic root of 11242947 is about 224.0234018387.

The spelling of 11242947 in words is "eleven million, two hundred forty-two thousand, nine hundred forty-seven".