220420142 has 8 divisors (see below), whose sum is σ = 335159616. Its totient is φ = 108700272.

The previous prime is 220420129. The next prime is 220420157. The reversal of 220420142 is 241024022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 220420142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754718 + ... + 755009.

It is an arithmetic number, because the mean of its divisors is an integer number (41894952).

Almost surely, 2^220420142 is an apocalyptic number.

220420142 is a deficient number, since it is larger than the sum of its proper divisors (114739474).

220420142 is a wasteful number, since it uses less digits than its factorization.

220420142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509802.

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

The square root of 220420142 is about 14846.5532026797. The cubic root of 220420142 is about 604.0651198739.

Adding to 220420142 its reverse (241024022), we get a palindrome (461444164).

The spelling of 220420142 in words is "two hundred twenty million, four hundred twenty thousand, one hundred forty-two".