427108521 has 32 divisors (see below), whose sum is σ = 670150656. Its totient is φ = 236880000.

The previous prime is 427108489. The next prime is 427108529. The reversal of 427108521 is 125801724.

It is not a de Polignac number, because 427108521 - 2⁵ = 427108489 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (427108529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180496 + ... + 182846.

It is an arithmetic number, because the mean of its divisors is an integer number (20942208).

Almost surely, 2^427108521 is an apocalyptic number.

427108521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

427108521 is a deficient number, since it is larger than the sum of its proper divisors (243042135).

427108521 is a wasteful number, since it uses less digits than its factorization.

427108521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 427108521 is about 20666.6040025932. The cubic root of 427108521 is about 753.0886089772.

The spelling of 427108521 in words is "four hundred twenty-seven million, one hundred eight thousand, five hundred twenty-one".