426242050666 has 8 divisors (see below), whose sum is σ = 639533085444. Its totient is φ = 213064355520.

The previous prime is 426242050649. The next prime is 426242050667. The reversal of 426242050666 is 666050242624.

It can be written as a sum of positive squares in 2 ways, for example, as 409306932441 + 16935118225 = 639771^2 + 130135^2 .

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

It is a super-2 number, since 2×426242050666² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426242050667) by changing a digit.

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, 28325505 + ... + 28340548.

Almost surely, 2^426242050666 is an apocalyptic number.

426242050666 is a deficient number, since it is larger than the sum of its proper divisors (213291034778).

426242050666 is a wasteful number, since it uses less digits than its factorization.

426242050666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56669816.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 426242050666 in words is "four hundred twenty-six billion, two hundred forty-two million, fifty thousand, six hundred sixty-six".