223543442 has 4 divisors (see below), whose sum is σ = 335315166. Its totient is φ = 111771720.

The previous prime is 223543433. The next prime is 223543469. The reversal of 223543442 is 244345322.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 165920161 + 57623281 = 12881^2 + 7591^2 .

It is a super-2 number, since 2×223543442² = 99943340922414728, 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, 55885859 + ... + 55885862.

Almost surely, 2^223543442 is an apocalyptic number.

223543442 is a deficient number, since it is larger than the sum of its proper divisors (111771724).

223543442 is a wasteful number, since it uses less digits than its factorization.

223543442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111771723.

The product of its digits is 23040, while the sum is 29.

The square root of 223543442 is about 14951.3692349564. The cubic root of 223543442 is about 606.9049009334.

Adding to 223543442 its reverse (244345322), we get a palindrome (467888764).

The spelling of 223543442 in words is "two hundred twenty-three million, five hundred forty-three thousand, four hundred forty-two".