403245305053421 has 2 divisors, whose sum is σ = 403245305053422. Its totient is φ = 403245305053420.

The previous prime is 403245305053417. The next prime is 403245305053441. The reversal of 403245305053421 is 124350503542304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309077883133321 + 94167421920100 = 17580611^2 + 9703990^2 .

It is a cyclic number.

It is not a de Polignac number, because 403245305053421 - 2² = 403245305053417 is a prime.

It is a super-5 number, since 5×403245305053421⁵ (a number of 74 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403245305053441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201622652526710 + 201622652526711.

It is an arithmetic number, because the mean of its divisors is an integer number (201622652526711).

Almost surely, 2^{403245305053421} is an apocalyptic number.

It is an amenable number.

403245305053421 is a deficient number, since it is larger than the sum of its proper divisors (1).

403245305053421 is an equidigital number, since it uses as much as digits as its factorization.

403245305053421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 403245305053421 its reverse (124350503542304), we get a palindrome (527595808595725).

The spelling of 403245305053421 in words is "four hundred three trillion, two hundred forty-five billion, three hundred five million, fifty-three thousand, four hundred twenty-one".