2001452420 has 48 divisors (see below), whose sum is σ = 4601838528. Its totient is φ = 725151360.

The previous prime is 2001452413. The next prime is 2001452437. The reversal of 2001452420 is 242541002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2001452392 and 2001452401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44519 + ... + 77361.

It is an arithmetic number, because the mean of its divisors is an integer number (95871636).

Almost surely, 2^2001452420 is an apocalyptic number.

2001452420 is a gapful number since it is divisible by the number (20) 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 2001452420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2300919264).

2001452420 is an abundant number, since it is smaller than the sum of its proper divisors (2600386108).

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

2001452420 is a wasteful number, since it uses less digits than its factorization.

2001452420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33140 (or 33138 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2001452420 is about 44737.5951521760. The cubic root of 2001452420 is about 1260.2259651845.

Adding to 2001452420 its reverse (242541002), we get a palindrome (2243993422).

The spelling of 2001452420 in words is "two billion, one million, four hundred fifty-two thousand, four hundred twenty".