342400120243 has 4 divisors (see below), whose sum is σ = 342708868080. Its totient is φ = 342091372408.

The previous prime is 342400120201. The next prime is 342400120261. The reversal of 342400120243 is 342021004243.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342400120243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342400160243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154372255 + ... + 154374472.

It is an arithmetic number, because the mean of its divisors is an integer number (85677217020).

Almost surely, 2^342400120243 is an apocalyptic number.

342400120243 is a deficient number, since it is larger than the sum of its proper divisors (308747837).

342400120243 is a wasteful number, since it uses less digits than its factorization.

342400120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308747836.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 342400120243 its reverse (342021004243), we get a palindrome (684421124486).

The spelling of 342400120243 in words is "three hundred forty-two billion, four hundred million, one hundred twenty thousand, two hundred forty-three".