42312344320243 has 4 divisors (see below), whose sum is σ = 42312359564280. Its totient is φ = 42312329076208.

The previous prime is 42312344320177. The next prime is 42312344320289. The reversal of 42312344320243 is 34202344321324.

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-42312344320243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42312344320343) 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, 2148130 + ... + 9446647.

It is an arithmetic number, because the mean of its divisors is an integer number (10578089891070).

Almost surely, 2^{42312344320243} is an apocalyptic number.

42312344320243 is a deficient number, since it is larger than the sum of its proper divisors (15244037).

42312344320243 is a wasteful number, since it uses less digits than its factorization.

42312344320243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15244036.

The product of its (nonzero) digits is 331776, while the sum is 37.

Adding to 42312344320243 its reverse (34202344321324), we get a palindrome (76514688641567).

The spelling of 42312344320243 in words is "forty-two trillion, three hundred twelve billion, three hundred forty-four million, three hundred twenty thousand, two hundred forty-three".