421270 has 16 divisors (see below), whose sum is σ = 767520. Its totient is φ = 166464.

The previous prime is 421241. The next prime is 421273. The reversal of 421270 is 72124.

421270 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421273) by changing a digit.

421270 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826 + ... + 1234.

It is an arithmetic number, because the mean of its divisors is an integer number (47970).

2⁴²¹²⁷⁰ is an apocalyptic number.

421270 is a deficient number, since it is larger than the sum of its proper divisors (346250).

421270 is a wasteful number, since it uses less digits than its factorization.

421270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 421270 is about 649.0531565288. The cubic root of 421270 is about 74.9641309964.

Adding to 421270 its reverse (72124), we get a palindrome (493394).

The spelling of 421270 in words is "four hundred twenty-one thousand, two hundred seventy", and thus it is an iban number.