421435453 has 8 divisors (see below), whose sum is σ = 436224600. Its totient is φ = 406663488.

The previous prime is 421435451. The next prime is 421435471. The reversal of 421435453 is 354534124.

It can be written as a sum of positive squares in 4 ways, for example, as 43599609 + 377835844 = 6603^2 + 19438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421435453 - 2¹ = 421435451 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 (421435451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64543 + ... + 70771.

It is an arithmetic number, because the mean of its divisors is an integer number (54528075).

Almost surely, 2^421435453 is an apocalyptic number.

It is an amenable number.

421435453 is a deficient number, since it is larger than the sum of its proper divisors (14789147).

421435453 is a wasteful number, since it uses less digits than its factorization.

421435453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8591.

The product of its digits is 28800, while the sum is 31.

The square root of 421435453 is about 20528.8931265180. The cubic root of 421435453 is about 749.7394371902.

Adding to 421435453 its reverse (354534124), we get a palindrome (775969577).

The spelling of 421435453 in words is "four hundred twenty-one million, four hundred thirty-five thousand, four hundred fifty-three".