421277 has 4 divisors (see below), whose sum is σ = 446076. Its totient is φ = 396480.

The previous prime is 421273. The next prime is 421279. The reversal of 421277 is 772124.

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 244036 + 177241 = 494^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 421277 - 2² = 421273 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421273) 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, 12374 + ... + 12407.

It is an arithmetic number, because the mean of its divisors is an integer number (111519).

2⁴²¹²⁷⁷ is an apocalyptic number.

It is an amenable number.

421277 is a deficient number, since it is larger than the sum of its proper divisors (24799).

421277 is a wasteful number, since it uses less digits than its factorization.

421277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24798.

The product of its digits is 784, while the sum is 23.

The square root of 421277 is about 649.0585489769. The cubic root of 421277 is about 74.9645462060.

The spelling of 421277 in words is "four hundred twenty-one thousand, two hundred seventy-seven", and thus it is an iban number.