426542243 has 4 divisors (see below), whose sum is σ = 426885000. Its totient is φ = 426199488.

The previous prime is 426542231. The next prime is 426542273. The reversal of 426542243 is 342245624.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 426542243 - 2⁸ = 426541987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426542273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169505 + ... + 172002.

It is an arithmetic number, because the mean of its divisors is an integer number (106721250).

Almost surely, 2^426542243 is an apocalyptic number.

426542243 is a deficient number, since it is larger than the sum of its proper divisors (342757).

426542243 is a wasteful number, since it uses less digits than its factorization.

426542243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342756.

The product of its digits is 46080, while the sum is 32.

The square root of 426542243 is about 20652.8991427354. The cubic root of 426542243 is about 752.7556365195.

Adding to 426542243 its reverse (342245624), we get a palindrome (768787867).

The spelling of 426542243 in words is "four hundred twenty-six million, five hundred forty-two thousand, two hundred forty-three".