42240503321 has 2 divisors, whose sum is σ = 42240503322. Its totient is φ = 42240503320.

The previous prime is 42240503317. The next prime is 42240503323. The reversal of 42240503321 is 12330504224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32180413321 + 10060090000 = 179389^2 + 100300^2 .

It is a cyclic number.

It is not a de Polignac number, because 42240503321 - 2² = 42240503317 is a prime.

It is a super-2 number, since 2×42240503321² (a number of 22 digits) contains 22 as substring.

Together with 42240503323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42240503323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21120251660 + 21120251661.

It is an arithmetic number, because the mean of its divisors is an integer number (21120251661).

Almost surely, 2^42240503321 is an apocalyptic number.

It is an amenable number.

42240503321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42240503321 is an equidigital number, since it uses as much as digits as its factorization.

42240503321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 42240503321 in words is "forty-two billion, two hundred forty million, five hundred three thousand, three hundred twenty-one".