11787142 has 4 divisors (see below), whose sum is σ = 17680716. Its totient is φ = 5893570.

The previous prime is 11787133. The next prime is 11787157. The reversal of 11787142 is 24178711.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2946784 + ... + 2946787.

It is an arithmetic number, because the mean of its divisors is an integer number (4420179).

Almost surely, 2^11787142 is an apocalyptic number.

11787142 is a deficient number, since it is larger than the sum of its proper divisors (5893574).

11787142 is an equidigital number, since it uses as much as digits as its factorization.

11787142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893573.

The product of its digits is 3136, while the sum is 31.

The square root of 11787142 is about 3433.2407430881. The cubic root of 11787142 is about 227.5810893158.

The spelling of 11787142 in words is "eleven million, seven hundred eighty-seven thousand, one hundred forty-two".