427540 has 12 divisors (see below), whose sum is σ = 897876. Its totient is φ = 171008.

The previous prime is 427529. The next prime is 427541. The reversal of 427540 is 45724.

It can be written as a sum of positive squares in 2 ways, for example, as 81796 + 345744 = 286^2 + 588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427541) by changing a digit.

427540 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10669 + ... + 10708.

It is an arithmetic number, because the mean of its divisors is an integer number (74823).

2⁴²⁷⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

427540 is an abundant number, since it is smaller than the sum of its proper divisors (470336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427540 is a wasteful number, since it uses less digits than its factorization.

427540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386 (or 21384 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 427540 is about 653.8654295801. The cubic root of 427540 is about 75.3342121877.

The spelling of 427540 in words is "four hundred twenty-seven thousand, five hundred forty".