427845 has 16 divisors (see below), whose sum is σ = 747072. Its totient is φ = 207360.

The previous prime is 427813. The next prime is 427849. The reversal of 427845 is 548724.

It is not a de Polignac number, because 427845 - 2⁵ = 427813 is a prime.

427845 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427849) 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, 1132 + ... + 1461.

It is an arithmetic number, because the mean of its divisors is an integer number (46692).

2⁴²⁷⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

427845 is a deficient number, since it is larger than the sum of its proper divisors (319227).

427845 is a wasteful number, since it uses less digits than its factorization.

427845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its digits is 8960, while the sum is 30.

The square root of 427845 is about 654.0986164180. The cubic root of 427845 is about 75.3521219919.

It can be divided in two parts, 4278 and 45, that multiplied together give a triangular number (192510 = T₆₂₀).

The spelling of 427845 in words is "four hundred twenty-seven thousand, eight hundred forty-five".