451005420 has 48 divisors (see below), whose sum is σ = 1289691648. Its totient is φ = 117708480.

The previous prime is 451005409. The next prime is 451005421. The reversal of 451005420 is 24500154.

It is not an unprimeable number, because it can be changed into a prime (451005421) 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 15 ways as a sum of consecutive naturals, for example, 77146 + ... + 82785.

It is an arithmetic number, because the mean of its divisors is an integer number (26868576).

Almost surely, 2^451005420 is an apocalyptic number.

It is an amenable number.

451005420 is an abundant number, since it is smaller than the sum of its proper divisors (838686228).

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

451005420 is a wasteful number, since it uses less digits than its factorization.

451005420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159990 (or 159988 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 451005420 is about 21236.8881901280. Note that the first 3 decimals coincide. The cubic root of 451005420 is about 766.8797210856.

Adding to 451005420 its reverse (24500154), we get a palindrome (475505574).

The spelling of 451005420 in words is "four hundred fifty-one million, five thousand, four hundred twenty".