16111142 has 4 divisors (see below), whose sum is σ = 24166716. Its totient is φ = 8055570.

The previous prime is 16111141. The next prime is 16111159. The reversal of 16111142 is 24111161.

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 16111142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16111141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4027784 + ... + 4027787.

It is an arithmetic number, because the mean of its divisors is an integer number (6041679).

Almost surely, 2^16111142 is an apocalyptic number.

16111142 is a deficient number, since it is larger than the sum of its proper divisors (8055574).

16111142 is an equidigital number, since it uses as much as digits as its factorization.

16111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8055573.

The product of its digits is 48, while the sum is 17.

The square root of 16111142 is about 4013.8687073695. The cubic root of 16111142 is about 252.5663231325.

The spelling of 16111142 in words is "sixteen million, one hundred eleven thousand, one hundred forty-two".