11979942 has 16 divisors (see below), whose sum is σ = 25803120. Its totient is φ = 3686112.

The previous prime is 11979931. The next prime is 11979949. The reversal of 11979942 is 24997911.

It is a junction number, because it is equal to n+sod(n) for n = 11979894 and 11979903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11979949) 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 7 ways as a sum of consecutive naturals, for example, 76717 + ... + 76872.

It is an arithmetic number, because the mean of its divisors is an integer number (1612695).

Almost surely, 2^11979942 is an apocalyptic number.

11979942 is an abundant number, since it is smaller than the sum of its proper divisors (13823178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11979942 is a wasteful number, since it uses less digits than its factorization.

11979942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153607.

The product of its digits is 40824, while the sum is 42.

The square root of 11979942 is about 3461.2052814013. The cubic root of 11979942 is about 228.8152180490.

It can be divided in two parts, 11979 and 942, that added together give a palindrome (12921).

The spelling of 11979942 in words is "eleven million, nine hundred seventy-nine thousand, nine hundred forty-two".