22135442 has 16 divisors (see below), whose sum is σ = 38008320. Its totient is φ = 9471168.

The previous prime is 22135441. The next prime is 22135447. The reversal of 22135442 is 24453122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22135441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13343 + ... + 14909.

It is an arithmetic number, because the mean of its divisors is an integer number (2375520).

Almost surely, 2^22135442 is an apocalyptic number.

22135442 is a deficient number, since it is larger than the sum of its proper divisors (15872878).

22135442 is a wasteful number, since it uses less digits than its factorization.

22135442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585.

The product of its digits is 1920, while the sum is 23.

The square root of 22135442 is about 4704.8317717002. The cubic root of 22135442 is about 280.7777779808. Note that the first 6 decimals are identical.

Adding to 22135442 its reverse (24453122), we get a palindrome (46588564).

The spelling of 22135442 in words is "twenty-two million, one hundred thirty-five thousand, four hundred forty-two".