142343424202221 has 24 divisors (see below), whose sum is σ = 230360856863904. Its totient is φ = 83937154318560.

The previous prime is 142343424202141. The next prime is 142343424202247. The reversal of 142343424202221 is 122202424343241.

142343424202221 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 4 + 3 + 4 + 2 + 420 + 2 + 221 = 666.

It is not a de Polignac number, because 142343424202221 - 2¹⁸ = 142343423940077 is a prime.

It is a super-2 number, since 2×142343424202221² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142343424203221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19429893171 + ... + 19429900496.

It is an arithmetic number, because the mean of its divisors is an integer number (9598369035996).

Almost surely, 2^{142343424202221} is an apocalyptic number.

142343424202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142343424202221 is a deficient number, since it is larger than the sum of its proper divisors (88017432661683).

142343424202221 is a wasteful number, since it uses less digits than its factorization.

142343424202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38859793721 (or 38859793718 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 142343424202221 its reverse (122202424343241), we get a palindrome (264545848545462).

The spelling of 142343424202221 in words is "one hundred forty-two trillion, three hundred forty-three billion, four hundred twenty-four million, two hundred two thousand, two hundred twenty-one".