22942142 has 4 divisors (see below), whose sum is σ = 34413216. Its totient is φ = 11471070.

The previous prime is 22942141. The next prime is 22942151. The reversal of 22942142 is 24124922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24124922 = 2 ⋅12062461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22942141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5735534 + ... + 5735537.

It is an arithmetic number, because the mean of its divisors is an integer number (8603304).

Almost surely, 2^22942142 is an apocalyptic number.

22942142 is a deficient number, since it is larger than the sum of its proper divisors (11471074).

22942142 is a wasteful number, since it uses less digits than its factorization.

22942142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471073.

The product of its digits is 2304, while the sum is 26.

The square root of 22942142 is about 4789.7956115058. The cubic root of 22942142 is about 284.1480333191.

The spelling of 22942142 in words is "twenty-two million, nine hundred forty-two thousand, one hundred forty-two".