22300042 has 4 divisors (see below), whose sum is σ = 33450066. Its totient is φ = 11150020.

The previous prime is 22300027. The next prime is 22300049. The reversal of 22300042 is 24000322.

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

It can be written as a sum of positive squares in only one way, i.e., 19704721 + 2595321 = 4439^2 + 1611^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22299995 and 22300031.

It is not an unprimeable number, because it can be changed into a prime (22300049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5575009 + ... + 5575012.

Almost surely, 2^22300042 is an apocalyptic number.

22300042 is a deficient number, since it is larger than the sum of its proper divisors (11150024).

22300042 is a wasteful number, since it uses less digits than its factorization.

22300042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11150023.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22300042 is about 4722.2920282422. The cubic root of 22300042 is about 281.4720181418.

Adding to 22300042 its reverse (24000322), we get a palindrome (46300364).

The spelling of 22300042 in words is "twenty-two million, three hundred thousand, forty-two".