420130452 has 96 divisors (see below), whose sum is σ = 1192181760. Its totient is φ = 112412160.

The previous prime is 420130441. The next prime is 420130457. The reversal of 420130452 is 254031024.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420130457) 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 31 ways as a sum of consecutive naturals, for example, 340677 + ... + 341907.

It is an arithmetic number, because the mean of its divisors is an integer number (12418560).

Almost surely, 2^420130452 is an apocalyptic number.

420130452 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420130452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596090880).

420130452 is an abundant number, since it is smaller than the sum of its proper divisors (772051308).

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

420130452 is a wasteful number, since it uses less digits than its factorization.

420130452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420130452 is about 20497.0839877286. The cubic root of 420130452 is about 748.9647654879.

Adding to 420130452 its reverse (254031024), we get a palindrome (674161476).

The spelling of 420130452 in words is "four hundred twenty million, one hundred thirty thousand, four hundred fifty-two".