1242343232121 has 8 divisors (see below), whose sum is σ = 1656462844800. Its totient is φ = 828226220432.

The previous prime is 1242343232111. The next prime is 1242343232153. The reversal of 1242343232121 is 1212323432421.

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 1242343232121 - 2⁵ = 1242343232089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242343232111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299055 + ... + 2042603.

It is an arithmetic number, because the mean of its divisors is an integer number (207057855600).

Almost surely, 2^{1242343232121} is an apocalyptic number.

It is an amenable number.

1242343232121 is a deficient number, since it is larger than the sum of its proper divisors (414119612679).

1242343232121 is an equidigital number, since it uses as much as digits as its factorization.

1242343232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300495.

The product of its digits is 13824, while the sum is 30.

Adding to 1242343232121 its reverse (1212323432421), we get a palindrome (2454666664542).

The spelling of 1242343232121 in words is "one trillion, two hundred forty-two billion, three hundred forty-three million, two hundred thirty-two thousand, one hundred twenty-one".