1242340165613 has 4 divisors (see below), whose sum is σ = 1244272266048. Its totient is φ = 1240408065180.

The previous prime is 1242340165531. The next prime is 1242340165733. The reversal of 1242340165613 is 3165610432421.

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 1242340165613 - 2²⁶ = 1242273056749 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 (1242340161613) 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, 966049253 + ... + 966050538.

It is an arithmetic number, because the mean of its divisors is an integer number (311068066512).

Almost surely, 2^{1242340165613} is an apocalyptic number.

It is an amenable number.

1242340165613 is a deficient number, since it is larger than the sum of its proper divisors (1932100435).

1242340165613 is an equidigital number, since it uses as much as digits as its factorization.

1242340165613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932100434.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1242340165613 in words is "one trillion, two hundred forty-two billion, three hundred forty million, one hundred sixty-five thousand, six hundred thirteen".