220342140 has 48 divisors (see below), whose sum is σ = 685510560. Its totient is φ = 58757760.

The previous prime is 220342123. The next prime is 220342201. The reversal of 220342140 is 41243022.

220342140 is a `hidden beast` number, since 2 + 203 + 421 + 40 = 666.

220342140 is digitally balanced in base 2, 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 (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203481 + ... + 204560.

It is an arithmetic number, because the mean of its divisors is an integer number (14281470).

Almost surely, 2^220342140 is an apocalyptic number.

220342140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220342140 is an abundant number, since it is smaller than the sum of its proper divisors (465168420).

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

220342140 is a wasteful number, since it uses less digits than its factorization.

220342140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408059 (or 408051 counting only the distinct ones).

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

The square root of 220342140 is about 14843.9260305352. The cubic root of 220342140 is about 603.9938562011.

Adding to 220342140 its reverse (41243022), we get a palindrome (261585162).

The spelling of 220342140 in words is "two hundred twenty million, three hundred forty-two thousand, one hundred forty".