427440271 has 4 divisors (see below), whose sum is σ = 427572000. Its totient is φ = 427308544.

The previous prime is 427440229. The next prime is 427440281. The reversal of 427440271 is 172044724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427440271 - 2⁹ = 427439759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427440281) 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, 60871 + ... + 67528.

It is an arithmetic number, because the mean of its divisors is an integer number (106893000).

Almost surely, 2^427440271 is an apocalyptic number.

427440271 is a deficient number, since it is larger than the sum of its proper divisors (131729).

427440271 is a wasteful number, since it uses less digits than its factorization.

427440271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131728.

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 427440271 is about 20674.6286786486. The cubic root of 427440271 is about 753.2835418619.

Adding to 427440271 its reverse (172044724), we get a palindrome (599484995).

The spelling of 427440271 in words is "four hundred twenty-seven million, four hundred forty thousand, two hundred seventy-one".