142442444023 has 4 divisors (see below), whose sum is σ = 155391757128. Its totient is φ = 129493130920.

The previous prime is 142442443987. The next prime is 142442444029. The reversal of 142442444023 is 320444244241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142442444023 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 142442444023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142442444029) 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, 6474656536 + ... + 6474656557.

It is an arithmetic number, because the mean of its divisors is an integer number (38847939282).

Almost surely, 2^142442444023 is an apocalyptic number.

142442444023 is a deficient number, since it is larger than the sum of its proper divisors (12949313105).

142442444023 is a wasteful number, since it uses less digits than its factorization.

142442444023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949313104.

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 142442444023 its reverse (320444244241), we get a palindrome (462886688264).

The spelling of 142442444023 in words is "one hundred forty-two billion, four hundred forty-two million, four hundred forty-four thousand, twenty-three".