42321400427 has 2 divisors, whose sum is σ = 42321400428. Its totient is φ = 42321400426.

The previous prime is 42321400379. The next prime is 42321400481. The reversal of 42321400427 is 72400412324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42321400427 is a prime.

It is a super-2 number, since 2×42321400427² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42321400427.

It is not a weakly prime, because it can be changed into another prime (42321400027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160700213 + 21160700214.

It is an arithmetic number, because the mean of its divisors is an integer number (21160700214).

Almost surely, 2^42321400427 is an apocalyptic number.

42321400427 is a deficient number, since it is larger than the sum of its proper divisors (1).

42321400427 is an equidigital number, since it uses as much as digits as its factorization.

42321400427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

The spelling of 42321400427 in words is "forty-two billion, three hundred twenty-one million, four hundred thousand, four hundred twenty-seven".