420242312 has 64 divisors (see below), whose sum is σ = 966712320. Its totient is φ = 167159808.

The previous prime is 420242297. The next prime is 420242321. The reversal of 420242312 is 213242024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66473 + ... + 72519.

It is an arithmetic number, because the mean of its divisors is an integer number (15104880).

Almost surely, 2^420242312 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 420242312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483356160).

420242312 is an abundant number, since it is smaller than the sum of its proper divisors (546470008).

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

420242312 is a wasteful number, since it uses less digits than its factorization.

420242312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150 (or 6146 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420242312 is about 20499.8124869473. The cubic root of 420242312 is about 749.0312303712.

Adding to 420242312 its reverse (213242024), we get a palindrome (633484336).

The spelling of 420242312 in words is "four hundred twenty million, two hundred forty-two thousand, three hundred twelve".