220042540 has 24 divisors (see below), whose sum is σ = 464863392. Its totient is φ = 87488640.

The previous prime is 220042523. The next prime is 220042547. The reversal of 220042540 is 45240022.

220042540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220042547) 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, 29601 + ... + 36280.

It is an arithmetic number, because the mean of its divisors is an integer number (19369308).

Almost surely, 2^220042540 is an apocalyptic number.

220042540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220042540 is an abundant number, since it is smaller than the sum of its proper divisors (244820852).

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

220042540 is a wasteful number, since it uses less digits than its factorization.

220042540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66057 (or 66055 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 220042540 is about 14833.8309279835. The cubic root of 220042540 is about 603.7199811613.

Adding to 220042540 its reverse (45240022), we get a palindrome (265282562).

The spelling of 220042540 in words is "two hundred twenty million, forty-two thousand, five hundred forty".