20426201 has 2 divisors, whose sum is σ = 20426202. Its totient is φ = 20426200.

The previous prime is 20426191. The next prime is 20426209. The reversal of 20426201 is 10262402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18696976 + 1729225 = 4324^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 20426201 - 2⁶ = 20426137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20426201.

It is not a weakly prime, because it can be changed into another prime (20426209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213100 + 10213101.

It is an arithmetic number, because the mean of its divisors is an integer number (10213101).

Almost surely, 2^20426201 is an apocalyptic number.

It is an amenable number.

20426201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20426201 is an equidigital number, since it uses as much as digits as its factorization.

20426201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20426201 is about 4519.5354849807. The cubic root of 20426201 is about 273.3563710835.

Adding to 20426201 its reverse (10262402), we get a palindrome (30688603).

The spelling of 20426201 in words is "twenty million, four hundred twenty-six thousand, two hundred one".