426630101 has 2 divisors, whose sum is σ = 426630102. Its totient is φ = 426630100.

The previous prime is 426630089. The next prime is 426630109. The reversal of 426630101 is 101036624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417180625 + 9449476 = 20425^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 426630101 - 2¹⁴ = 426613717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426630109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213315050 + 213315051.

It is an arithmetic number, because the mean of its divisors is an integer number (213315051).

Almost surely, 2^426630101 is an apocalyptic number.

It is an amenable number.

426630101 is a deficient number, since it is larger than the sum of its proper divisors (1).

426630101 is an equidigital number, since it uses as much as digits as its factorization.

426630101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 426630101 is about 20655.0260469456. The cubic root of 426630101 is about 752.8073164843.

Adding to 426630101 its reverse (101036624), we get a palindrome (527666725).

The spelling of 426630101 in words is "four hundred twenty-six million, six hundred thirty thousand, one hundred one".