420116252 has 12 divisors (see below), whose sum is σ = 767168976. Its totient is φ = 200925120.

The previous prime is 420116251. The next prime is 420116273. The reversal of 420116252 is 252611024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420116251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283149 + ... + 2283332.

It is an arithmetic number, because the mean of its divisors is an integer number (63930748).

Almost surely, 2^420116252 is an apocalyptic number.

It is an amenable number.

420116252 is a deficient number, since it is larger than the sum of its proper divisors (347052724).

420116252 is a wasteful number, since it uses less digits than its factorization.

420116252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566508 (or 4566506 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 420116252 is about 20496.7375940660. The cubic root of 420116252 is about 748.9563272997.

Adding to 420116252 its reverse (252611024), we get a palindrome (672727276).

The spelling of 420116252 in words is "four hundred twenty million, one hundred sixteen thousand, two hundred fifty-two".