11871642 has 16 divisors (see below), whose sum is σ = 23780160. Its totient is φ = 3951072.

The previous prime is 11871619. The next prime is 11871647. The reversal of 11871642 is 24617811.

11871642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11871647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4438 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (1486260).

Almost surely, 2^11871642 is an apocalyptic number.

11871642 is an abundant number, since it is smaller than the sum of its proper divisors (11908518).

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

11871642 is a wasteful number, since it uses less digits than its factorization.

11871642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077.

The product of its digits is 2688, while the sum is 30.

The square root of 11871642 is about 3445.5249237235. The cubic root of 11871642 is about 228.1236248619.

The spelling of 11871642 in words is "eleven million, eight hundred seventy-one thousand, six hundred forty-two".