222542 has 4 divisors (see below), whose sum is σ = 333816. Its totient is φ = 111270.

The previous prime is 222533. The next prime is 222553. The reversal of 222542 is 245222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245222 = 2 ⋅122611.

It is a self number, because there is not a number n which added to its sum of digits gives 222542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55634 + ... + 55637.

It is an arithmetic number, because the mean of its divisors is an integer number (83454).

2²²²⁵⁴² is an apocalyptic number.

222542 is a deficient number, since it is larger than the sum of its proper divisors (111274).

222542 is a wasteful number, since it uses less digits than its factorization.

222542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111273.

The product of its digits is 320, while the sum is 17.

The square root of 222542 is about 471.7435744130. The cubic root of 222542 is about 60.5997262420.

Subtracting from 222542 its product of digits (320), we obtain a palindrome (222222).

Adding to 222542 its reverse (245222), we get a palindrome (467764).

The spelling of 222542 in words is "two hundred twenty-two thousand, five hundred forty-two".