142121420042144 has 48 divisors (see below), whose sum is σ = 285209862708960. Its totient is φ = 69699487952640.

The previous prime is 142121420042117. The next prime is 142121420042153. The reversal of 142121420042144 is 441240024121241.

It is a happy number.

It is a super-2 number, since 2×142121420042144² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 142121420042144.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192111287 + ... + 192849654.

It is an arithmetic number, because the mean of its divisors is an integer number (5941872139770).

Almost surely, 2^{142121420042144} is an apocalyptic number.

It is an amenable number.

142121420042144 is an abundant number, since it is smaller than the sum of its proper divisors (143088442666816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142121420042144 is a wasteful number, since it uses less digits than its factorization.

142121420042144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384961173 (or 384961165 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 142121420042144 its reverse (441240024121241), we get a palindrome (583361444163385).

The spelling of 142121420042144 in words is "one hundred forty-two trillion, one hundred twenty-one billion, four hundred twenty million, forty-two thousand, one hundred forty-four".