223421142 has 32 divisors (see below), whose sum is σ = 512508672. Its totient is φ = 63605664.

The previous prime is 223421087. The next prime is 223421153. The reversal of 223421142 is 241124322.

223421142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 2488 + ... + 21284.

It is an arithmetic number, because the mean of its divisors is an integer number (16015896).

Almost surely, 2^223421142 is an apocalyptic number.

223421142 is an abundant number, since it is smaller than the sum of its proper divisors (289087530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223421142 is a wasteful number, since it uses less digits than its factorization.

223421142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19092.

The product of its digits is 768, while the sum is 21.

The square root of 223421142 is about 14947.2787489897. The cubic root of 223421142 is about 606.7942020780.

Adding to 223421142 its reverse (241124322), we get a palindrome (464545464).

The spelling of 223421142 in words is "two hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-two".