3125242440 has 192 divisors, whose sum is σ = 10758908160. Its totient is φ = 815546880.

The previous prime is 3125242433. The next prime is 3125242457. The reversal of 3125242440 is 442425213.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 453420 + ... + 460260.

It is an arithmetic number, because the mean of its divisors is an integer number (56035980).

Almost surely, 2^3125242440 is an apocalyptic number.

3125242440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3125242440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5379454080).

3125242440 is an abundant number, since it is smaller than the sum of its proper divisors (7633665720).

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

3125242440 is a wasteful number, since it uses less digits than its factorization.

3125242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6914 (or 6898 counting only the distinct ones).

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

The square root of 3125242440 is about 55903.8678447207. The cubic root of 3125242440 is about 1462.0466760680.

Adding to 3125242440 its reverse (442425213), we get a palindrome (3567667653).

The spelling of 3125242440 in words is "three billion, one hundred twenty-five million, two hundred forty-two thousand, four hundred forty".