421453013 has 4 divisors (see below), whose sum is σ = 422111148. Its totient is φ = 420794880.

The previous prime is 421452953. The next prime is 421453033. The reversal of 421453013 is 310354124.

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 297286564 + 124166449 = 17242^2 + 11143^2 .

It is a cyclic number.

It is not a de Polignac number, because 421453013 - 2¹² = 421448917 is a prime.

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 421453013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421453033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328106 + ... + 329387.

It is an arithmetic number, because the mean of its divisors is an integer number (105527787).

Almost surely, 2^421453013 is an apocalyptic number.

It is an amenable number.

421453013 is a deficient number, since it is larger than the sum of its proper divisors (658135).

421453013 is an equidigital number, since it uses as much as digits as its factorization.

421453013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658134.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 421453013 is about 20529.3208119509. The cubic root of 421453013 is about 749.7498502057.

The spelling of 421453013 in words is "four hundred twenty-one million, four hundred fifty-three thousand, thirteen".