10111142 has 4 divisors (see below), whose sum is σ = 15166716. Its totient is φ = 5055570.

The previous prime is 10111139. The next prime is 10111147. The reversal of 10111142 is 24111101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24111101 = 7 ⋅3444443.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527784 + ... + 2527787.

It is an arithmetic number, because the mean of its divisors is an integer number (3791679).

Almost surely, 2^10111142 is an apocalyptic number.

10111142 is a deficient number, since it is larger than the sum of its proper divisors (5055574).

10111142 is an equidigital number, since it uses as much as digits as its factorization.

10111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055573.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 10111142 is about 3179.8021951059. The cubic root of 10111142 is about 216.2386907559.

Adding to 10111142 its reverse (24111101), we get a palindrome (34222243).

The spelling of 10111142 in words is "ten million, one hundred eleven thousand, one hundred forty-two".