22145342 has 4 divisors (see below), whose sum is σ = 33218016. Its totient is φ = 11072670.

The previous prime is 22145327. The next prime is 22145363. The reversal of 22145342 is 24354122.

It is a happy number.

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

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, 5536334 + ... + 5536337.

It is an arithmetic number, because the mean of its divisors is an integer number (8304504).

Almost surely, 2^22145342 is an apocalyptic number.

22145342 is a deficient number, since it is larger than the sum of its proper divisors (11072674).

22145342 is a wasteful number, since it uses less digits than its factorization.

22145342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072673.

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

The square root of 22145342 is about 4705.8837639704. The cubic root of 22145342 is about 280.8196307058.

Adding to 22145342 its reverse (24354122), we get a palindrome (46499464).

The spelling of 22145342 in words is "twenty-two million, one hundred forty-five thousand, three hundred forty-two".