403242423481 has 2 divisors, whose sum is σ = 403242423482. Its totient is φ = 403242423480.

The previous prime is 403242423427. The next prime is 403242423491. The reversal of 403242423481 is 184324242304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313050321081 + 90192102400 = 559509^2 + 300320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403242423481 is a prime.

It is a super-2 number, since 2×403242423481² (a number of 24 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 403242423481.

It is not a weakly prime, because it can be changed into another prime (403242423491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201621211740 + 201621211741.

It is an arithmetic number, because the mean of its divisors is an integer number (201621211741).

Almost surely, 2^403242423481 is an apocalyptic number.

It is an amenable number.

403242423481 is a deficient number, since it is larger than the sum of its proper divisors (1).

403242423481 is an equidigital number, since it uses as much as digits as its factorization.

403242423481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 37.

Adding to 403242423481 its reverse (184324242304), we get a palindrome (587566665785).

The spelling of 403242423481 in words is "four hundred three billion, two hundred forty-two million, four hundred twenty-three thousand, four hundred eighty-one".