5235421440 has 144 divisors (see below), whose sum is σ = 16909603200. Its totient is φ = 1380335616.

The previous prime is 5235421427. The next prime is 5235421447. The reversal of 5235421440 is 441245325.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5235421398 and 5235421407.

It is not an unprimeable number, because it can be changed into a prime (5235421447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334101 + ... + 349419.

It is an arithmetic number, because the mean of its divisors is an integer number (117427800).

Almost surely, 2^5235421440 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 5235421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8454801600).

5235421440 is an abundant number, since it is smaller than the sum of its proper divisors (11674181760).

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

5235421440 is a wasteful number, since it uses less digits than its factorization.

5235421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15432 (or 15418 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 5235421440 is about 72356.2121728328. The cubic root of 5235421440 is about 1736.4030861935.

Adding to 5235421440 its reverse (441245325), we get a palindrome (5676666765).

The spelling of 5235421440 in words is "five billion, two hundred thirty-five million, four hundred twenty-one thousand, four hundred forty".