426817721942 has 8 divisors (see below), whose sum is σ = 640231061232. Its totient is φ = 213407368200.

The previous prime is 426817721903. The next prime is 426817721999. The reversal of 426817721942 is 249127718624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346034 + ... + 986597.

It is an arithmetic number, because the mean of its divisors is an integer number (80028882654).

Almost surely, 2^426817721942 is an apocalyptic number.

426817721942 is a deficient number, since it is larger than the sum of its proper divisors (213413339290).

426817721942 is a wasteful number, since it uses less digits than its factorization.

426817721942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492774.

The product of its digits is 2709504, while the sum is 53.

The spelling of 426817721942 in words is "four hundred twenty-six billion, eight hundred seventeen million, seven hundred twenty-one thousand, nine hundred forty-two".