426161 has 2 divisors, whose sum is σ = 426162. Its totient is φ = 426160.

The previous prime is 426131. The next prime is 426163. The reversal of 426161 is 161624.

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., 323761 + 102400 = 569^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 426161 - 2¹⁴ = 409777 is a prime.

It is a super-2 number, since 2×426161² = 363226395842, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 426163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (426163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213080 + 213081.

It is an arithmetic number, because the mean of its divisors is an integer number (213081).

2⁴²⁶¹⁶¹ is an apocalyptic number.

It is an amenable number.

426161 is a deficient number, since it is larger than the sum of its proper divisors (1).

426161 is an equidigital number, since it uses as much as digits as its factorization.

426161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 426161 is about 652.8100795790. The cubic root of 426161 is about 75.2531298941.

Adding to 426161 its reverse (161624), we get a palindrome (587785).

It can be divided in two parts, 426 and 161, that multiplied together give a palindrome (68586).

The spelling of 426161 in words is "four hundred twenty-six thousand, one hundred sixty-one".