11807842 has 4 divisors (see below), whose sum is σ = 17711766. Its totient is φ = 5903920.

The previous prime is 11807833. The next prime is 11807863. The reversal of 11807842 is 24870811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10686361 + 1121481 = 3269^2 + 1059^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2951959 + ... + 2951962.

Almost surely, 2^11807842 is an apocalyptic number.

11807842 is a deficient number, since it is larger than the sum of its proper divisors (5903924).

11807842 is an equidigital number, since it uses as much as digits as its factorization.

11807842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903923.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 11807842 is about 3436.2540651122. The cubic root of 11807842 is about 227.7142336504.

The spelling of 11807842 in words is "eleven million, eight hundred seven thousand, eight hundred forty-two".