11919642 has 24 divisors (see below), whose sum is σ = 27732096. Its totient is φ = 3405528.

The previous prime is 11919637. The next prime is 11919653. The reversal of 11919642 is 24691911.

11919642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19978 + ... + 20565.

It is an arithmetic number, because the mean of its divisors is an integer number (1155504).

Almost surely, 2^11919642 is an apocalyptic number.

11919642 is an abundant number, since it is smaller than the sum of its proper divisors (15812454).

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

11919642 is a wasteful number, since it uses less digits than its factorization.

11919642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40562 (or 40555 counting only the distinct ones).

The product of its digits is 3888, while the sum is 33.

The square root of 11919642 is about 3452.4834539792. The cubic root of 11919642 is about 228.4306649295.

It can be divided in two parts, 11919 and 642, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 11919642 in words is "eleven million, nine hundred nineteen thousand, six hundred forty-two".