426243543 has 16 divisors (see below), whose sum is σ = 631691136. Its totient is φ = 253454240.

The previous prime is 426243529. The next prime is 426243547. The reversal of 426243543 is 345342624.

It is a cyclic number.

It is not a de Polignac number, because 426243543 - 2⁸ = 426243287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426243547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120105 + ... + 123602.

It is an arithmetic number, because the mean of its divisors is an integer number (39480696).

Almost surely, 2^426243543 is an apocalyptic number.

426243543 is a deficient number, since it is larger than the sum of its proper divisors (205447593).

426243543 is a wasteful number, since it uses less digits than its factorization.

426243543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243774.

The product of its digits is 69120, while the sum is 33.

The square root of 426243543 is about 20645.6664460123. Note that the first 3 decimals coincide. The cubic root of 426243543 is about 752.5798816609.

The spelling of 426243543 in words is "four hundred twenty-six million, two hundred forty-three thousand, five hundred forty-three".