421201452 has 144 divisors (see below), whose sum is σ = 1253115360. Its totient is φ = 109283328.

The previous prime is 421201421. The next prime is 421201471. The reversal of 421201452 is 254102124.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 289158 + ... + 290610.

It is an arithmetic number, because the mean of its divisors is an integer number (8702190).

Almost surely, 2^421201452 is an apocalyptic number.

421201452 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 421201452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626557680).

421201452 is an abundant number, since it is smaller than the sum of its proper divisors (831913908).

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

421201452 is a wasteful number, since it uses less digits than its factorization.

421201452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 421201452 is about 20523.1930264274. The cubic root of 421201452 is about 749.6006478393.

Adding to 421201452 its reverse (254102124), we get a palindrome (675303576).

The spelling of 421201452 in words is "four hundred twenty-one million, two hundred one thousand, four hundred fifty-two".