426706543 has 4 divisors (see below), whose sum is σ = 429261840. Its totient is φ = 424151248.

The previous prime is 426706523. The next prime is 426706547. The reversal of 426706543 is 345607624.

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-426706543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426706547) 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, 1277398 + ... + 1277731.

It is an arithmetic number, because the mean of its divisors is an integer number (107315460).

Almost surely, 2^426706543 is an apocalyptic number.

426706543 is a deficient number, since it is larger than the sum of its proper divisors (2555297).

426706543 is a wasteful number, since it uses less digits than its factorization.

426706543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555296.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 426706543 is about 20656.8764095640. The cubic root of 426706543 is about 752.8522755407.

The spelling of 426706543 in words is "four hundred twenty-six million, seven hundred six thousand, five hundred forty-three".