11388142 has 4 divisors (see below), whose sum is σ = 17082216. Its totient is φ = 5694070.

The previous prime is 11388137. The next prime is 11388161. The reversal of 11388142 is 24188311.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11388142.

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, 2847034 + ... + 2847037.

It is an arithmetic number, because the mean of its divisors is an integer number (4270554).

Almost surely, 2^11388142 is an apocalyptic number.

11388142 is a deficient number, since it is larger than the sum of its proper divisors (5694074).

11388142 is an equidigital number, since it uses as much as digits as its factorization.

11388142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694073.

The product of its digits is 1536, while the sum is 28.

The square root of 11388142 is about 3374.6321280993. The cubic root of 11388142 is about 224.9836498407.

The spelling of 11388142 in words is "eleven million, three hundred eighty-eight thousand, one hundred forty-two".