42320401 has 2 divisors, whose sum is σ = 42320402. Its totient is φ = 42320400.

The previous prime is 42320389. The next prime is 42320419. The reversal of 42320401 is 10402324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41796225 + 524176 = 6465^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 42320401 - 2⁷ = 42320273 is a prime.

It is not a weakly prime, because it can be changed into another prime (42320431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160200 + 21160201.

It is an arithmetic number, because the mean of its divisors is an integer number (21160201).

Almost surely, 2^42320401 is an apocalyptic number.

It is an amenable number.

42320401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42320401 is an equidigital number, since it uses as much as digits as its factorization.

42320401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42320401 is about 6505.4132074758. The cubic root of 42320401 is about 348.4843329879.

Adding to 42320401 its reverse (10402324), we get a palindrome (52722725).

The spelling of 42320401 in words is "forty-two million, three hundred twenty thousand, four hundred one".