11287142 has 4 divisors (see below), whose sum is σ = 16930716. Its totient is φ = 5643570.

The previous prime is 11287139. The next prime is 11287147. The reversal of 11287142 is 24178211.

11287142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11287147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821784 + ... + 2821787.

It is an arithmetic number, because the mean of its divisors is an integer number (4232679).

Almost surely, 2^11287142 is an apocalyptic number.

11287142 is a deficient number, since it is larger than the sum of its proper divisors (5643574).

11287142 is an equidigital number, since it uses as much as digits as its factorization.

11287142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643573.

The product of its digits is 896, while the sum is 26.

The square root of 11287142 is about 3359.6342062790. The cubic root of 11287142 is about 224.3165565772.

The spelling of 11287142 in words is "eleven million, two hundred eighty-seven thousand, one hundred forty-two".