4240421320 has 16 divisors (see below), whose sum is σ = 9540948060. Its totient is φ = 1696168512.

The previous prime is 4240421291. The next prime is 4240421323. The reversal of 4240421320 is 231240424.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4232022916 + 8398404 = 65054^2 + 2898^2 .

It is a super-2 number, since 2×4240421320² = 35962345942221084800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4240421291 and 4240421300.

It is not an unprimeable number, because it can be changed into a prime (4240421323) 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, 53005227 + ... + 53005306.

Almost surely, 2^4240421320 is an apocalyptic number.

4240421320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4240421320 is an abundant number, since it is smaller than the sum of its proper divisors (5300526740).

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

4240421320 is a wasteful number, since it uses less digits than its factorization.

4240421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010544 (or 106010540 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4240421320 is about 65118.5174892672. The cubic root of 4240421320 is about 1618.5880752746.

Adding to 4240421320 its reverse (231240424), we get a palindrome (4471661744).

The spelling of 4240421320 in words is "four billion, two hundred forty million, four hundred twenty-one thousand, three hundred twenty".