22452142 has 4 divisors (see below), whose sum is σ = 33678216. Its totient is φ = 11226070.

The previous prime is 22452137. The next prime is 22452151. The reversal of 22452142 is 24125422.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5613034 + ... + 5613037.

It is an arithmetic number, because the mean of its divisors is an integer number (8419554).

Almost surely, 2^22452142 is an apocalyptic number.

22452142 is a deficient number, since it is larger than the sum of its proper divisors (11226074).

22452142 is a wasteful number, since it uses less digits than its factorization.

22452142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11226073.

The product of its digits is 1280, while the sum is 22.

The square root of 22452142 is about 4738.3691287193. The cubic root of 22452142 is about 282.1105061266.

Adding to 22452142 its reverse (24125422), we get a palindrome (46577564).

The spelling of 22452142 in words is "twenty-two million, four hundred fifty-two thousand, one hundred forty-two".