1242547116 has 24 divisors (see below), whose sum is σ = 2915478720. Its totient is φ = 411867792.

The previous prime is 1242547109. The next prime is 1242547121. The reversal of 1242547116 is 6117452421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287086 + ... + 291381.

It is an arithmetic number, because the mean of its divisors is an integer number (121478280).

Almost surely, 2^1242547116 is an apocalyptic number.

It is an amenable number.

1242547116 is an abundant number, since it is smaller than the sum of its proper divisors (1672931604).

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

1242547116 is a wasteful number, since it uses less digits than its factorization.

1242547116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578653 (or 578651 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1242547116 is about 35249.7817865586. The cubic root of 1242547116 is about 1075.0721757201.

Adding to 1242547116 its reverse (6117452421), we get a palindrome (7359999537).

The spelling of 1242547116 in words is "one billion, two hundred forty-two million, five hundred forty-seven thousand, one hundred sixteen".