42535001321 has 2 divisors, whose sum is σ = 42535001322. Its totient is φ = 42535001320.

The previous prime is 42535001303. The next prime is 42535001357. The reversal of 42535001321 is 12310053524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42378751321 + 156250000 = 205861^2 + 12500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42535001321 is a prime.

It is a super-3 number, since 3×42535001321³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42535001921) 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, 21267500660 + 21267500661.

It is an arithmetic number, because the mean of its divisors is an integer number (21267500661).

Almost surely, 2^42535001321 is an apocalyptic number.

It is an amenable number.

42535001321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42535001321 is an equidigital number, since it uses as much as digits as its factorization.

42535001321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 42535001321 its reverse (12310053524), we get a palindrome (54845054845).

The spelling of 42535001321 in words is "forty-two billion, five hundred thirty-five million, one thousand, three hundred twenty-one".