22031242 has 8 divisors (see below), whose sum is σ = 34186500. Its totient is φ = 10635744.

The previous prime is 22031239. The next prime is 22031281. The reversal of 22031242 is 24213022.

It can be written as a sum of positive squares in 2 ways, for example, as 21986721 + 44521 = 4689^2 + 211^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189867 + ... + 189982.

Almost surely, 2^22031242 is an apocalyptic number.

22031242 is a deficient number, since it is larger than the sum of its proper divisors (12155258).

22031242 is a wasteful number, since it uses less digits than its factorization.

22031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379880.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22031242 is about 4693.7449866817. The cubic root of 22031242 is about 280.3365086815.

Adding to 22031242 its reverse (24213022), we get a palindrome (46244264).

The spelling of 22031242 in words is "twenty-two million, thirty-one thousand, two hundred forty-two".