420100242143 has 4 divisors (see below), whose sum is σ = 420903493608. Its totient is φ = 419296990680.

The previous prime is 420100242077. The next prime is 420100242157. The reversal of 420100242143 is 341242001024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420100242143 - 2⁸ = 420100241887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420100242173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401624948 + ... + 401625993.

It is an arithmetic number, because the mean of its divisors is an integer number (105225873402).

Almost surely, 2^420100242143 is an apocalyptic number.

420100242143 is a deficient number, since it is larger than the sum of its proper divisors (803251465).

420100242143 is an equidigital number, since it uses as much as digits as its factorization.

420100242143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803251464.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 420100242143 its reverse (341242001024), we get a palindrome (761342243167).

The spelling of 420100242143 in words is "four hundred twenty billion, one hundred million, two hundred forty-two thousand, one hundred forty-three".