451420 has 12 divisors (see below), whose sum is σ = 948024. Its totient is φ = 180560.

The previous prime is 451411. The next prime is 451439. The reversal of 451420 is 24154.

It is a junction number, because it is equal to n+sod(n) for n = 451394 and 451403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11266 + ... + 11305.

It is an arithmetic number, because the mean of its divisors is an integer number (79002).

2⁴⁵¹⁴²⁰ is an apocalyptic number.

It is an amenable number.

451420 is an abundant number, since it is smaller than the sum of its proper divisors (496604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451420 is a wasteful number, since it uses less digits than its factorization.

451420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22580 (or 22578 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 451420 is about 671.8779651097. The cubic root of 451420 is about 76.7114630033.

Adding to 451420 its reverse (24154), we get a palindrome (475574).

It can be divided in two parts, 451 and 420, that multiplied together give a triangular number (189420 = T₆₁₅).

The spelling of 451420 in words is "four hundred fifty-one thousand, four hundred twenty".