220420442 has 16 divisors (see below), whose sum is σ = 361396512. Its totient is φ = 99994320.

The previous prime is 220420441. The next prime is 220420471. The reversal of 220420442 is 244024022.

220420442 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 (220420441) 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, 1928 + ... + 21084.

It is an arithmetic number, because the mean of its divisors is an integer number (22587282).

Almost surely, 2^220420442 is an apocalyptic number.

220420442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

220420442 is a deficient number, since it is larger than the sum of its proper divisors (140976070).

220420442 is a wasteful number, since it uses less digits than its factorization.

220420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19693.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 220420442 is about 14846.5633060315. The cubic root of 220420442 is about 604.0653939255.

Adding to 220420442 its reverse (244024022), we get a palindrome (464444464).

The spelling of 220420442 in words is "two hundred twenty million, four hundred twenty thousand, four hundred forty-two".