5231242440 has 160 divisors (see below), whose sum is σ = 17626249080. Its totient is φ = 1391551488.

The previous prime is 5231242433. The next prime is 5231242451. The reversal of 5231242440 is 442421325.

5231242440 is a `hidden beast` number, since 5 + 231 + 2 + 424 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5191778916 + 39463524 = 72054^2 + 6282^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1478914 + ... + 1482446.

Almost surely, 2^5231242440 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 5231242440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8813124540).

5231242440 is an abundant number, since it is smaller than the sum of its proper divisors (12395006640).

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

5231242440 is a wasteful number, since it uses less digits than its factorization.

5231242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013 (or 4000 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 5231242440 is about 72327.3284450629. The cubic root of 5231242440 is about 1735.9409546554.

Adding to 5231242440 its reverse (442421325), we get a palindrome (5673663765).

The spelling of 5231242440 in words is "five billion, two hundred thirty-one million, two hundred forty-two thousand, four hundred forty".