222420140 has 24 divisors (see below), whose sum is σ = 483189840. Its totient is φ = 85899968.

The previous prime is 222420139. The next prime is 222420161. The reversal of 222420140 is 41024222.

It is a happy number.

222420140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191162 + ... + 192321.

It is an arithmetic number, because the mean of its divisors is an integer number (20132910).

Almost surely, 2^222420140 is an apocalyptic number.

222420140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222420140 is an abundant number, since it is smaller than the sum of its proper divisors (260769700).

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

222420140 is a wasteful number, since it uses less digits than its factorization.

222420140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383521 (or 383519 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 222420140 is about 14913.7567366509. The cubic root of 222420140 is about 605.8866311542.

Adding to 222420140 its reverse (41024222), we get a palindrome (263444362).

The spelling of 222420140 in words is "two hundred twenty-two million, four hundred twenty thousand, one hundred forty".