42421343243 has 8 divisors (see below), whose sum is σ = 43520565648. Its totient is φ = 41336123904.

The previous prime is 42421343233. The next prime is 42421343249. The reversal of 42421343243 is 34234312424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42421343243 - 2⁸ = 42421342987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42421343249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3494630 + ... + 3506747.

It is an arithmetic number, because the mean of its divisors is an integer number (5440070706).

Almost surely, 2^42421343243 is an apocalyptic number.

42421343243 is a deficient number, since it is larger than the sum of its proper divisors (1099222405).

42421343243 is an equidigital number, since it uses as much as digits as its factorization.

42421343243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001533.

The product of its digits is 55296, while the sum is 32.

Adding to 42421343243 its reverse (34234312424), we get a palindrome (76655655667).

The spelling of 42421343243 in words is "forty-two billion, four hundred twenty-one million, three hundred forty-three thousand, two hundred forty-three".