223220142 has 24 divisors (see below), whose sum is σ = 484353480. Its totient is φ = 74297520.

The previous prime is 223220141. The next prime is 223220147. The reversal of 223220142 is 241022322.

223220142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223220142³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223220141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4017 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (20181395).

Almost surely, 2^223220142 is an apocalyptic number.

223220142 is an abundant number, since it is smaller than the sum of its proper divisors (261133338).

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

223220142 is a wasteful number, since it uses less digits than its factorization.

223220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18208 (or 18205 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 223220142 is about 14940.5536042009. The cubic root of 223220142 is about 606.6121807659.

Adding to 223220142 its reverse (241022322), we get a palindrome (464242464).

The spelling of 223220142 in words is "two hundred twenty-three million, two hundred twenty thousand, one hundred forty-two".