22712042 has 4 divisors (see below), whose sum is σ = 34068066. Its totient is φ = 11356020.

The previous prime is 22712023. The next prime is 22712059. The reversal of 22712042 is 24021722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24021722 = 2 ⋅12010861.

It can be written as a sum of positive squares in only one way, i.e., 17380561 + 5331481 = 4169^2 + 2309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5678009 + ... + 5678012.

Almost surely, 2^22712042 is an apocalyptic number.

22712042 is a deficient number, since it is larger than the sum of its proper divisors (11356024).

22712042 is a wasteful number, since it uses less digits than its factorization.

22712042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356023.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22712042 is about 4765.7152663582. The cubic root of 22712042 is about 283.1948779889.

Adding to 22712042 its reverse (24021722), we get a palindrome (46733764).

The spelling of 22712042 in words is "twenty-two million, seven hundred twelve thousand, forty-two".