402040330481 has 2 divisors, whose sum is σ = 402040330482. Its totient is φ = 402040330480.

The previous prime is 402040330477. The next prime is 402040330513. The reversal of 402040330481 is 184033040204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254399184400 + 147641146081 = 504380^2 + 384241^2 .

It is a cyclic number.

It is not a de Polignac number, because 402040330481 - 2² = 402040330477 is a prime.

It is a super-2 number, since 2×402040330481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402040330421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201020165240 + 201020165241.

It is an arithmetic number, because the mean of its divisors is an integer number (201020165241).

Almost surely, 2^402040330481 is an apocalyptic number.

It is an amenable number.

402040330481 is a deficient number, since it is larger than the sum of its proper divisors (1).

402040330481 is an equidigital number, since it uses as much as digits as its factorization.

402040330481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 402040330481 its reverse (184033040204), we get a palindrome (586073370685).

The spelling of 402040330481 in words is "four hundred two billion, forty million, three hundred thirty thousand, four hundred eighty-one".