420220143 has 72 divisors (see below), whose sum is σ = 753637248. Its totient is φ = 229193712.

The previous prime is 420220139. The next prime is 420220147. The reversal of 420220143 is 341022024.

420220143 is a `hidden beast` number, since 420 + 2 + 201 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (420220139) and next prime (420220147).

It is not a de Polignac number, because 420220143 - 2² = 420220139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420220147) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 899596 + ... + 900062.

It is an arithmetic number, because the mean of its divisors is an integer number (10467184).

Almost surely, 2^420220143 is an apocalyptic number.

420220143 is a deficient number, since it is larger than the sum of its proper divisors (333417105).

420220143 is an equidigital number, since it uses as much as digits as its factorization.

420220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 500 counting only the distinct ones).

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

The square root of 420220143 is about 20499.2717675531. The cubic root of 420220143 is about 749.0180589501.

Adding to 420220143 its reverse (341022024), we get a palindrome (761242167).

The spelling of 420220143 in words is "four hundred twenty million, two hundred twenty thousand, one hundred forty-three".