454215421 has 4 divisors (see below), whose sum is σ = 495507744. Its totient is φ = 412923100.

The previous prime is 454215409. The next prime is 454215427. The reversal of 454215421 is 124512454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 454215421 - 2¹⁵ = 454182653 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 454215421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454215427) 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, 20646145 + ... + 20646166.

It is an arithmetic number, because the mean of its divisors is an integer number (123876936).

Almost surely, 2^454215421 is an apocalyptic number.

It is an amenable number.

454215421 is a deficient number, since it is larger than the sum of its proper divisors (41292323).

454215421 is a wasteful number, since it uses less digits than its factorization.

454215421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41292322.

The product of its digits is 6400, while the sum is 28.

The square root of 454215421 is about 21312.3302573886. The cubic root of 454215421 is about 768.6948266658.

Adding to 454215421 its reverse (124512454), we get a palindrome (578727875).

The spelling of 454215421 in words is "four hundred fifty-four million, two hundred fifteen thousand, four hundred twenty-one".