11967642 has 16 divisors (see below), whose sum is σ = 26594880. Its totient is φ = 3989196.

The previous prime is 11967617. The next prime is 11967649. The reversal of 11967642 is 24676911.

11967642 is a `hidden beast` number, since 1 + 1 + 9 + 6 + 7 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11967597 and 11967606.

It is not an unprimeable number, because it can be changed into a prime (11967649) 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, 110758 + ... + 110865.

It is an arithmetic number, because the mean of its divisors is an integer number (1662180).

Almost surely, 2^11967642 is an apocalyptic number.

11967642 is an abundant number, since it is smaller than the sum of its proper divisors (14627238).

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

11967642 is a wasteful number, since it uses less digits than its factorization.

11967642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221634 (or 221628 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 11967642 is about 3459.4279873991. The cubic root of 11967642 is about 228.7368818062.

The spelling of 11967642 in words is "eleven million, nine hundred sixty-seven thousand, six hundred forty-two".