22045142 has 8 divisors (see below), whose sum is σ = 37791696. Its totient is φ = 9447912.

The previous prime is 22045099. The next prime is 22045147. The reversal of 22045142 is 24154022.

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 (22045147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787313 + ... + 787340.

It is an arithmetic number, because the mean of its divisors is an integer number (4723962).

Almost surely, 2^22045142 is an apocalyptic number.

22045142 is a deficient number, since it is larger than the sum of its proper divisors (15746554).

22045142 is a wasteful number, since it uses less digits than its factorization.

22045142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574662.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22045142 is about 4695.2254471963. The cubic root of 22045142 is about 280.3954531305.

Adding to 22045142 its reverse (24154022), we get a palindrome (46199164).

The spelling of 22045142 in words is "twenty-two million, forty-five thousand, one hundred forty-two".