342121202121243 has 32 divisors (see below), whose sum is σ = 478704458880000. Its totient is φ = 217046276358912.

The previous prime is 342121202121233. The next prime is 342121202121277.

342121202121243 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 342121202121243 - 2¹³ = 342121202113051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342121202121243.

It is not an unprimeable number, because it can be changed into a prime (342121202121203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39830533 + ... + 47652006.

It is an arithmetic number, because the mean of its divisors is an integer number (14959514340000).

Almost surely, 2^{342121202121243} is an apocalyptic number.

342121202121243 is a deficient number, since it is larger than the sum of its proper divisors (136583256758757).

342121202121243 is a wasteful number, since it uses less digits than its factorization.

342121202121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87483219.

The product of its (nonzero) digits is 9216, while the sum is 30.

It can be divided in two parts, 34212120 and 2121243, that added together give a palindrome (36333363).

The spelling of 342121202121243 in words is "three hundred forty-two trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, two hundred forty-three".