451420540 has 96 divisors (see below), whose sum is σ = 1021031424. Its totient is φ = 167270400.

The previous prime is 451420531. The next prime is 451420553. The reversal of 451420540 is 45024154.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2989465 + ... + 2989615.

It is an arithmetic number, because the mean of its divisors is an integer number (10635744).

Almost surely, 2^451420540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451420540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510515712).

451420540 is an abundant number, since it is smaller than the sum of its proper divisors (569610884).

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

451420540 is a wasteful number, since it uses less digits than its factorization.

451420540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 451420540 is about 21246.6595021429. The cubic root of 451420540 is about 767.1149359140.

Adding to 451420540 its reverse (45024154), we get a palindrome (496444694).

The spelling of 451420540 in words is "four hundred fifty-one million, four hundred twenty thousand, five hundred forty".