426549 has 4 divisors (see below), whose sum is σ = 568736. Its totient is φ = 284364.

The previous prime is 426541. The next prime is 426551. The reversal of 426549 is 945624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 426549 - 2³ = 426541 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71089 + ... + 71094.

It is an arithmetic number, because the mean of its divisors is an integer number (142184).

2⁴²⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

426549 is a deficient number, since it is larger than the sum of its proper divisors (142187).

426549 is a wasteful number, since it uses less digits than its factorization.

426549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142186.

The product of its digits is 8640, while the sum is 30.

The square root of 426549 is about 653.1071887524. The cubic root of 426549 is about 75.2759611384.

The spelling of 426549 in words is "four hundred twenty-six thousand, five hundred forty-nine".