22621142 has 8 divisors (see below), whose sum is σ = 34572096. Its totient is φ = 11097112.

The previous prime is 22621141. The next prime is 22621163. The reversal of 22621142 is 24112622.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22621141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106598 + ... + 106809.

It is an arithmetic number, because the mean of its divisors is an integer number (4321512).

Almost surely, 2^22621142 is an apocalyptic number.

22621142 is a deficient number, since it is larger than the sum of its proper divisors (11950954).

22621142 is a wasteful number, since it uses less digits than its factorization.

22621142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213462.

The product of its digits is 384, while the sum is 20.

The square root of 22621142 is about 4756.1688363640. The cubic root of 22621142 is about 282.8165642325.

Adding to 22621142 its reverse (24112622), we get a palindrome (46733764).

The spelling of 22621142 in words is "twenty-two million, six hundred twenty-one thousand, one hundred forty-two".