42821571323 has 2 divisors, whose sum is σ = 42821571324. Its totient is φ = 42821571322.

The previous prime is 42821571319. The next prime is 42821571343. The reversal of 42821571323 is 32317512824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42821571323 - 2² = 42821571319 is a prime.

It is not a weakly prime, because it can be changed into another prime (42821571313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21410785661 + 21410785662.

It is an arithmetic number, because the mean of its divisors is an integer number (21410785662).

Almost surely, 2^42821571323 is an apocalyptic number.

42821571323 is a deficient number, since it is larger than the sum of its proper divisors (1).

42821571323 is an equidigital number, since it uses as much as digits as its factorization.

42821571323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The spelling of 42821571323 in words is "forty-two billion, eight hundred twenty-one million, five hundred seventy-one thousand, three hundred twenty-three".