223442120 has 64 divisors (see below), whose sum is σ = 551707200. Its totient is φ = 80769280.

The previous prime is 223442111. The next prime is 223442143. The reversal of 223442120 is 21244322.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 223442092 and 223442101.

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, 77342 + ... + 80178.

It is an arithmetic number, because the mean of its divisors is an integer number (8620425).

Almost surely, 2^223442120 is an apocalyptic number.

223442120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223442120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275853600).

223442120 is an abundant number, since it is smaller than the sum of its proper divisors (328265080).

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

223442120 is a wasteful number, since it uses less digits than its factorization.

223442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038 (or 3034 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 223442120 is about 14947.9804656014. The cubic root of 223442120 is about 606.8131930148.

Adding to 223442120 its reverse (21244322), we get a palindrome (244686442).

The spelling of 223442120 in words is "two hundred twenty-three million, four hundred forty-two thousand, one hundred twenty".