11981242 has 16 divisors (see below), whose sum is σ = 22119552. Its totient is φ = 4739760.

The previous prime is 11981237. The next prime is 11981273. The reversal of 11981242 is 24218911.

It is a self number, because there is not a number n which added to its sum of digits gives 11981242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32734 + ... + 33097.

It is an arithmetic number, because the mean of its divisors is an integer number (1382472).

Almost surely, 2^11981242 is an apocalyptic number.

11981242 is a deficient number, since it is larger than the sum of its proper divisors (10138310).

11981242 is a wasteful number, since it uses less digits than its factorization.

11981242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65853.

The product of its digits is 1152, while the sum is 28.

The square root of 11981242 is about 3461.3930721604. The cubic root of 11981242 is about 228.8234943558.

The spelling of 11981242 in words is "eleven million, nine hundred eighty-one thousand, two hundred forty-two".