451421 has 8 divisors (see below), whose sum is σ = 496320. Its totient is φ = 408672.

The previous prime is 451411. The next prime is 451439. The reversal of 451421 is 124154.

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 451421 - 2¹⁴ = 435037 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 451421.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 451421.

It is not an unprimeable number, because it can be changed into a prime (451411) 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, 80 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (62040).

2⁴⁵¹⁴²¹ is an apocalyptic number.

It is an amenable number.

451421 is a deficient number, since it is larger than the sum of its proper divisors (44899).

451421 is a wasteful number, since it uses less digits than its factorization.

451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its digits is 160, while the sum is 17.

The square root of 451421 is about 671.8787092921. The cubic root of 451421 is about 76.7115196479.

Adding to 451421 its reverse (124154), we get a palindrome (575575).

The spelling of 451421 in words is "four hundred fifty-one thousand, four hundred twenty-one".