1242513983 has 12 divisors (see below), whose sum is σ = 1279942272. Its totient is φ = 1206152640.

The previous prime is 1242513977. The next prime is 1242513997. The reversal of 1242513983 is 3893152421.

It is not a de Polignac number, because 1242513983 - 2¹⁰ = 1242512959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242513973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 843938 + ... + 845408.

It is an arithmetic number, because the mean of its divisors is an integer number (106661856).

Almost surely, 2^1242513983 is an apocalyptic number.

1242513983 is a deficient number, since it is larger than the sum of its proper divisors (37428289).

1242513983 is an equidigital number, since it uses as much as digits as its factorization.

1242513983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162 (or 2125 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 1242513983 is about 35249.3118088850. The cubic root of 1242513983 is about 1075.0626198965.

The spelling of 1242513983 in words is "one billion, two hundred forty-two million, five hundred thirteen thousand, nine hundred eighty-three".