321242401 has 2 divisors, whose sum is σ = 321242402. Its totient is φ = 321242400.

The previous prime is 321242377. The next prime is 321242407. The reversal of 321242401 is 104242123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314140176 + 7102225 = 17724^2 + 2665^2 .

It is a cyclic number.

It is not a de Polignac number, because 321242401 - 2²¹ = 319145249 is a prime.

It is not a weakly prime, because it can be changed into another prime (321242407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160621200 + 160621201.

It is an arithmetic number, because the mean of its divisors is an integer number (160621201).

Almost surely, 2^321242401 is an apocalyptic number.

It is an amenable number.

321242401 is a deficient number, since it is larger than the sum of its proper divisors (1).

321242401 is an equidigital number, since it uses as much as digits as its factorization.

321242401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 321242401 is about 17923.2363428037. The cubic root of 321242401 is about 684.8744338012.

Adding to 321242401 its reverse (104242123), we get a palindrome (425484524).

The spelling of 321242401 in words is "three hundred twenty-one million, two hundred forty-two thousand, four hundred one".