605402121323 has 2 divisors, whose sum is σ = 605402121324. Its totient is φ = 605402121322.

The previous prime is 605402121307. The next prime is 605402121367. The reversal of 605402121323 is 323121204506.

It is a happy number.

605402121323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 605402121323 - 2⁴ = 605402121307 is a prime.

It is a super-2 number, since 2×605402121323² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (605402121223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302701060661 + 302701060662.

It is an arithmetic number, because the mean of its divisors is an integer number (302701060662).

Almost surely, 2^605402121323 is an apocalyptic number.

605402121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

605402121323 is an equidigital number, since it uses as much as digits as its factorization.

605402121323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 605402121323 its reverse (323121204506), we get a palindrome (928523325829).

The spelling of 605402121323 in words is "six hundred five billion, four hundred two million, one hundred twenty-one thousand, three hundred twenty-three".