242121310133 has 12 divisors (see below), whose sum is σ = 250633339020. Its totient is φ = 233889762240.

The previous prime is 242121310091. The next prime is 242121310231. The reversal of 242121310133 is 331013121242.

It can be written as a sum of positive squares in 2 ways, for example, as 97605006724 + 144516303409 = 312418^2 + 380153^2 .

It is not a de Polignac number, because 242121310133 - 2⁸ = 242121309877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242121310099 and 242121310108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242121310033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309113 + ... + 761441.

It is an arithmetic number, because the mean of its divisors is an integer number (20886111585).

Almost surely, 2^242121310133 is an apocalyptic number.

It is an amenable number.

242121310133 is a deficient number, since it is larger than the sum of its proper divisors (8512028887).

242121310133 is an equidigital number, since it uses as much as digits as its factorization.

242121310133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452948 (or 452917 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 242121310133 its reverse (331013121242), we get a palindrome (573134431375).

The spelling of 242121310133 in words is "two hundred forty-two billion, one hundred twenty-one million, three hundred ten thousand, one hundred thirty-three".