424845 has 20 divisors (see below), whose sum is σ = 762300. Its totient is φ = 226368.

The previous prime is 424843. The next prime is 424849. The reversal of 424845 is 548424.

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 142884 = 531^2 + 378^2 .

It is not a de Polignac number, because 424845 - 2¹ = 424843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 120 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (38115).

2⁴²⁴⁸⁴⁵ is an apocalyptic number.

424845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

424845 is a deficient number, since it is larger than the sum of its proper divisors (337455).

424845 is a wasteful number, since it uses less digits than its factorization.

424845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1057 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 424845 is about 651.8013501060. The cubic root of 424845 is about 75.1755885945.

The spelling of 424845 in words is "four hundred twenty-four thousand, eight hundred forty-five".