1242022424413 has 4 divisors (see below), whose sum is σ = 1242856557820. Its totient is φ = 1241188291008.

The previous prime is 1242022424399. The next prime is 1242022424437. The reversal of 1242022424413 is 3144242202421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 512846473689 + 729175950724 = 716133^2 + 853918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242022424413 - 2¹³ = 1242022416221 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 (1242022424443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417064470 + ... + 417067447.

It is an arithmetic number, because the mean of its divisors is an integer number (310714139455).

Almost surely, 2^{1242022424413} is an apocalyptic number.

It is an amenable number.

1242022424413 is a deficient number, since it is larger than the sum of its proper divisors (834133407).

1242022424413 is an equidigital number, since it uses as much as digits as its factorization.

1242022424413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834133406.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 1242022424413 its reverse (3144242202421), we get a palindrome (4386264626834).

The spelling of 1242022424413 in words is "one trillion, two hundred forty-two billion, twenty-two million, four hundred twenty-four thousand, four hundred thirteen".