342120404021243 has 16 divisors (see below), whose sum is σ = 349664129438400. Its totient is φ = 334640921788800.

The previous prime is 342120404021189. The next prime is 342120404021281.

It is a happy number.

342120404021243 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 342120404021243 - 2³² = 342116109053947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342120404021743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15018521 + ... + 30162837.

It is an arithmetic number, because the mean of its divisors is an integer number (21854008089900).

Almost surely, 2^{342120404021243} is an apocalyptic number.

342120404021243 is a deficient number, since it is larger than the sum of its proper divisors (7543725417157).

342120404021243 is a wasteful number, since it uses less digits than its factorization.

342120404021243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15146438.

The product of its (nonzero) digits is 36864, while the sum is 32.

It can be divided in two parts, 34212040 and 4021243, that added together give a palindrome (38233283).

The spelling of 342120404021243 in words is "three hundred forty-two trillion, one hundred twenty billion, four hundred four million, twenty-one thousand, two hundred forty-three".