33642242 has 4 divisors (see below), whose sum is σ = 50463366. Its totient is φ = 16821120.

The previous prime is 33642239. The next prime is 33642251. The reversal of 33642242 is 24224633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24224633 = 59 ⋅410587.

It can be written as a sum of positive squares in only one way, i.e., 27447121 + 6195121 = 5239^2 + 2489^2 .

It is a super-2 number, since 2×33642242² = 2263600893573128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8410559 + ... + 8410562.

Almost surely, 2^33642242 is an apocalyptic number.

33642242 is a deficient number, since it is larger than the sum of its proper divisors (16821124).

33642242 is a wasteful number, since it uses less digits than its factorization.

33642242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16821123.

The product of its digits is 6912, while the sum is 26.

The square root of 33642242 is about 5800.1932726419. The cubic root of 33642242 is about 322.8208996642.

Adding to 33642242 its reverse (24224633), we get a palindrome (57866875).

The spelling of 33642242 in words is "thirty-three million, six hundred forty-two thousand, two hundred forty-two".