223422142 has 4 divisors (see below), whose sum is σ = 335133216. Its totient is φ = 111711070.

The previous prime is 223422127. The next prime is 223422149. The reversal of 223422142 is 241224322.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223422149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55855534 + ... + 55855537.

It is an arithmetic number, because the mean of its divisors is an integer number (83783304).

Almost surely, 2^223422142 is an apocalyptic number.

223422142 is a deficient number, since it is larger than the sum of its proper divisors (111711074).

223422142 is a wasteful number, since it uses less digits than its factorization.

223422142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111711073.

The product of its digits is 1536, while the sum is 22.

The square root of 223422142 is about 14947.3121998572. The cubic root of 223422142 is about 606.7951073837.

Adding to 223422142 its reverse (241224322), we get a palindrome (464646464).

The spelling of 223422142 in words is "two hundred twenty-three million, four hundred twenty-two thousand, one hundred forty-two".