1242440143213 has 8 divisors (see below), whose sum is σ = 1243403758080. Its totient is φ = 1241476692960.

The previous prime is 1242440143183. The next prime is 1242440143277. The reversal of 1242440143213 is 3123410442421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242440143213 - 2²¹ = 1242438046061 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 (1242440143013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18101706 + ... + 18170212.

It is an arithmetic number, because the mean of its divisors is an integer number (155425469760).

Almost surely, 2^{1242440143213} is an apocalyptic number.

It is an amenable number.

1242440143213 is a deficient number, since it is larger than the sum of its proper divisors (963614867).

1242440143213 is a wasteful number, since it uses less digits than its factorization.

1242440143213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82307.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1242440143213 its reverse (3123410442421), we get a palindrome (4365850585634).

The spelling of 1242440143213 in words is "one trillion, two hundred forty-two billion, four hundred forty million, one hundred forty-three thousand, two hundred thirteen".