1242342513 has 12 divisors (see below), whose sum is σ = 1856374260. Its totient is φ = 799668576.

The previous prime is 1242342509. The next prime is 1242342533. The reversal of 1242342513 is 3152432421.

1242342513 is a `hidden beast` number, since 124 + 23 + 4 + 2 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 828748944 + 413593569 = 28788^2 + 20337^2 .

It is not a de Polignac number, because 1242342513 - 2² = 1242342509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242342503) 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, 2379706 + ... + 2380227.

It is an arithmetic number, because the mean of its divisors is an integer number (154697855).

Almost surely, 2^1242342513 is an apocalyptic number.

It is an amenable number.

1242342513 is a deficient number, since it is larger than the sum of its proper divisors (614031747).

1242342513 is a wasteful number, since it uses less digits than its factorization.

1242342513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759968 (or 4759965 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1242342513 is about 35246.8794788986. The cubic root of 1242342513 is about 1075.0131638554.

Adding to 1242342513 its reverse (3152432421), we get a palindrome (4394774934).

The spelling of 1242342513 in words is "one billion, two hundred forty-two million, three hundred forty-two thousand, five hundred thirteen".