142121420042143 has 4 divisors (see below), whose sum is σ = 142126578554688. Its totient is φ = 142116261529600.

The previous prime is 142121420042117. The next prime is 142121420042153. The reversal of 142121420042143 is 341240024121241.

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 142121420042143 - 2⁵ = 142121420042111 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 (142121420042153) 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, 2579214946 + ... + 2579270047.

It is an arithmetic number, because the mean of its divisors is an integer number (35531644638672).

Almost surely, 2^{142121420042143} is an apocalyptic number.

142121420042143 is a deficient number, since it is larger than the sum of its proper divisors (5158512545).

142121420042143 is an equidigital number, since it uses as much as digits as its factorization.

142121420042143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158512544.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 142121420042143 its reverse (341240024121241), we get a palindrome (483361444163384).

The spelling of 142121420042143 in words is "one hundred forty-two trillion, one hundred twenty-one billion, four hundred twenty million, forty-two thousand, one hundred forty-three".