223442140 has 24 divisors (see below), whose sum is σ = 469576800. Its totient is φ = 89310528.

The previous prime is 223442111. The next prime is 223442143. The reversal of 223442140 is 41244322.

It is a happy number.

223442140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223442143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30561 + ... + 37159.

It is an arithmetic number, because the mean of its divisors is an integer number (19565700).

Almost surely, 2^223442140 is an apocalyptic number.

223442140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223442140 is an abundant number, since it is smaller than the sum of its proper divisors (246134660).

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

223442140 is a wasteful number, since it uses less digits than its factorization.

223442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8301 (or 8299 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 223442140 is about 14947.9811345880. The cubic root of 223442140 is about 606.8132111198.

Adding to 223442140 its reverse (41244322), we get a palindrome (264686462).

The spelling of 223442140 in words is "two hundred twenty-three million, four hundred forty-two thousand, one hundred forty".