2142420143 has 4 divisors (see below), whose sum is σ = 2142861480. Its totient is φ = 2141978808.

The previous prime is 2142420097. The next prime is 2142420149. The reversal of 2142420143 is 3410242412.

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 2142420143 - 2⁶ = 2142420079 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 (2142420149) 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, 213305 + ... + 223122.

It is an arithmetic number, because the mean of its divisors is an integer number (535715370).

Almost surely, 2^2142420143 is an apocalyptic number.

2142420143 is a deficient number, since it is larger than the sum of its proper divisors (441337).

2142420143 is an equidigital number, since it uses as much as digits as its factorization.

2142420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441336.

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

The square root of 2142420143 is about 46286.2846100224. The cubic root of 2142420143 is about 1289.1443443341.

Adding to 2142420143 its reverse (3410242412), we get a palindrome (5552662555).

The spelling of 2142420143 in words is "two billion, one hundred forty-two million, four hundred twenty thousand, one hundred forty-three".