454142221 has 16 divisors (see below), whose sum is σ = 504469504. Its totient is φ = 406171584.

The previous prime is 454142191. The next prime is 454142231. The reversal of 454142221 is 122241454.

It is not a de Polignac number, because 454142221 - 2⁵ = 454142189 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 (454142231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67795 + ... + 74191.

It is an arithmetic number, because the mean of its divisors is an integer number (31529344).

Almost surely, 2^454142221 is an apocalyptic number.

It is an amenable number.

454142221 is a deficient number, since it is larger than the sum of its proper divisors (50327283).

454142221 is a wasteful number, since it uses less digits than its factorization.

454142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580.

The product of its digits is 2560, while the sum is 25.

The square root of 454142221 is about 21310.6128724633. The cubic root of 454142221 is about 768.6535309269.

Adding to 454142221 its reverse (122241454), we get a palindrome (576383675).

The spelling of 454142221 in words is "four hundred fifty-four million, one hundred forty-two thousand, two hundred twenty-one".