1242040200413 has 4 divisors (see below), whose sum is σ = 1260578113920. Its totient is φ = 1223502286908.

The previous prime is 1242040200409. The next prime is 1242040200449. The reversal of 1242040200413 is 3140020402421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1242040200413 - 2² = 1242040200409 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 (1242040200493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9268956653 + ... + 9268956786.

It is an arithmetic number, because the mean of its divisors is an integer number (315144528480).

Almost surely, 2^{1242040200413} is an apocalyptic number.

It is an amenable number.

1242040200413 is a deficient number, since it is larger than the sum of its proper divisors (18537913507).

1242040200413 is an equidigital number, since it uses as much as digits as its factorization.

1242040200413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537913506.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1242040200413 its reverse (3140020402421), we get a palindrome (4382060602834).

The spelling of 1242040200413 in words is "one trillion, two hundred forty-two billion, forty million, two hundred thousand, four hundred thirteen".