142417256443 has 16 divisors (see below), whose sum is σ = 182358077184. Its totient is φ = 107975172960.

The previous prime is 142417256393. The next prime is 142417256447. The reversal of 142417256443 is 344652714241.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142417256443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142417256443.

It is not an unprimeable number, because it can be changed into a prime (142417256447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24991405 + ... + 24997102.

It is an arithmetic number, because the mean of its divisors is an integer number (11397379824).

Almost surely, 2^142417256443 is an apocalyptic number.

142417256443 is a deficient number, since it is larger than the sum of its proper divisors (39940820741).

142417256443 is a wasteful number, since it uses less digits than its factorization.

142417256443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49988562.

The product of its digits is 645120, while the sum is 43.

The spelling of 142417256443 in words is "one hundred forty-two billion, four hundred seventeen million, two hundred fifty-six thousand, four hundred forty-three".