22641142 has 4 divisors (see below), whose sum is σ = 33961716. Its totient is φ = 11320570.

The previous prime is 22641133. The next prime is 22641181. The reversal of 22641142 is 24114622.

It is a happy number.

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

It is a super-2 number, since 2×22641142² = 1025242622128328, which contains 22 as substring.

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, 5660284 + ... + 5660287.

It is an arithmetic number, because the mean of its divisors is an integer number (8490429).

Almost surely, 2^22641142 is an apocalyptic number.

22641142 is a deficient number, since it is larger than the sum of its proper divisors (11320574).

22641142 is a wasteful number, since it uses less digits than its factorization.

22641142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320573.

The product of its digits is 768, while the sum is 22.

The square root of 22641142 is about 4758.2709044358. The cubic root of 22641142 is about 282.8998884243.

Adding to 22641142 its reverse (24114622), we get a palindrome (46755764).

The spelling of 22641142 in words is "twenty-two million, six hundred forty-one thousand, one hundred forty-two".