22742122 has 8 divisors (see below), whose sum is σ = 36737316. Its totient is φ = 10496352.

The previous prime is 22742117. The next prime is 22742131. The reversal of 22742122 is 22124722.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19989841 + 2752281 = 4471^2 + 1659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22742122² = 1034408226125768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22742093 and 22742102.

It is an unprimeable number.

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, 437323 + ... + 437374.

Almost surely, 2^22742122 is an apocalyptic number.

22742122 is a deficient number, since it is larger than the sum of its proper divisors (13995194).

22742122 is a wasteful number, since it uses less digits than its factorization.

22742122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874712.

The product of its digits is 896, while the sum is 22.

The square root of 22742122 is about 4768.8700967839. The cubic root of 22742122 is about 283.3198446481.

Adding to 22742122 its reverse (22124722), we get a palindrome (44866844).

The spelling of 22742122 in words is "twenty-two million, seven hundred forty-two thousand, one hundred twenty-two".