271421 has 4 divisors (see below), whose sum is σ = 272700. Its totient is φ = 270144.

The previous prime is 271409. The next prime is 271429. The reversal of 271421 is 124172.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45796 + 225625 = 214^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 271421 - 2⁶ = 271357 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 271421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271429) 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, 236 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (68175).

2²⁷¹⁴²¹ is an apocalyptic number.

It is an amenable number.

271421 is a deficient number, since it is larger than the sum of its proper divisors (1279).

271421 is a wasteful number, since it uses less digits than its factorization.

271421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its digits is 112, while the sum is 17.

The square root of 271421 is about 520.9808057885. The cubic root of 271421 is about 64.7462294630.

Adding to 271421 its reverse (124172), we get a palindrome (395593).

The spelling of 271421 in words is "two hundred seventy-one thousand, four hundred twenty-one", and thus it is an iban number.