442621686126245 has 16 divisors (see below), whose sum is σ = 537126440647680. Its totient is φ = 350110588992384.

The previous prime is 442621686126223. The next prime is 442621686126253. The reversal of 442621686126245 is 542621686126244.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442621686126245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7642712 + ... + 30718958.

It is an arithmetic number, because the mean of its divisors is an integer number (33570402540480).

Almost surely, 2^{442621686126245} is an apocalyptic number.

It is an amenable number.

442621686126245 is a deficient number, since it is larger than the sum of its proper divisors (94504754521435).

442621686126245 is a wasteful number, since it uses less digits than its factorization.

442621686126245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23119444.

The product of its digits is 53084160, while the sum is 59.

Subtracting 442621686126245 from its reverse (542621686126244), we obtain a palindrome (99999999999999).

The spelling of 442621686126245 in words is "four hundred forty-two trillion, six hundred twenty-one billion, six hundred eighty-six million, one hundred twenty-six thousand, two hundred forty-five".