220023442 has 4 divisors (see below), whose sum is σ = 330035166. Its totient is φ = 110011720.

The previous prime is 220023437. The next prime is 220023467. The reversal of 220023442 is 244320022.

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., 219365721 + 657721 = 14811^2 + 811^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55005859 + ... + 55005862.

Almost surely, 2^220023442 is an apocalyptic number.

220023442 is a deficient number, since it is larger than the sum of its proper divisors (110011724).

220023442 is a wasteful number, since it uses less digits than its factorization.

220023442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110011723.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 220023442 is about 14833.1871828006. The cubic root of 220023442 is about 603.7025145724.

Adding to 220023442 its reverse (244320022), we get a palindrome (464343464).

The spelling of 220023442 in words is "two hundred twenty million, twenty-three thousand, four hundred forty-two".