3123242440 has 64 divisors (see below), whose sum is σ = 7083417600. Its totient is φ = 1239366912.

The previous prime is 3123242429. The next prime is 3123242461. The reversal of 3123242440 is 442423213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661054 + ... + 3661906.

It is an arithmetic number, because the mean of its divisors is an integer number (110678400).

Almost surely, 2^3123242440 is an apocalyptic number.

It is an amenable number.

3123242440 is an abundant number, since it is smaller than the sum of its proper divisors (3960175160).

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

3123242440 is a wasteful number, since it uses less digits than its factorization.

3123242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 3123242440 is about 55885.9771320141. The cubic root of 3123242440 is about 1461.7347304202.

Adding to 3123242440 its reverse (442423213), we get a palindrome (3565665653).

The spelling of 3123242440 in words is "three billion, one hundred twenty-three million, two hundred forty-two thousand, four hundred forty".