421044454 has 4 divisors (see below), whose sum is σ = 631566684. Its totient is φ = 210522226.

The previous prime is 421044443. The next prime is 421044487. The reversal of 421044454 is 454440124.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105261112 + ... + 105261115.

It is an arithmetic number, because the mean of its divisors is an integer number (157891671).

Almost surely, 2^421044454 is an apocalyptic number.

421044454 is a deficient number, since it is larger than the sum of its proper divisors (210522230).

421044454 is a wasteful number, since it uses less digits than its factorization.

421044454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210522229.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 421044454 is about 20519.3677777850. The cubic root of 421044454 is about 749.5075012567.

Adding to 421044454 its reverse (454440124), we get a palindrome (875484578).

The spelling of 421044454 in words is "four hundred twenty-one million, forty-four thousand, four hundred fifty-four".