426242161 has 2 divisors, whose sum is σ = 426242162. Its totient is φ = 426242160.

The previous prime is 426242147. The next prime is 426242227. The reversal of 426242161 is 161242624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382945761 + 43296400 = 19569^2 + 6580^2 .

It is a cyclic number.

It is not a de Polignac number, because 426242161 - 2⁵ = 426242129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426242111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213121080 + 213121081.

It is an arithmetic number, because the mean of its divisors is an integer number (213121081).

Almost surely, 2^426242161 is an apocalyptic number.

It is an amenable number.

426242161 is a deficient number, since it is larger than the sum of its proper divisors (1).

426242161 is an equidigital number, since it uses as much as digits as its factorization.

426242161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 426242161 is about 20645.6329764917. The cubic root of 426242161 is about 752.5790683023.

Adding to 426242161 its reverse (161242624), we get a palindrome (587484785).

The spelling of 426242161 in words is "four hundred twenty-six million, two hundred forty-two thousand, one hundred sixty-one".