426871261 has 2 divisors, whose sum is σ = 426871262. Its totient is φ = 426871260.

The previous prime is 426871259. The next prime is 426871297. The reversal of 426871261 is 162178624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387105625 + 39765636 = 19675^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 426871261 - 2¹ = 426871259 is a prime.

It is a super-3 number, since 3×426871261³ (a number of 27 digits) contains 333 as substring.

Together with 426871259, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 426871261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426871201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213435630 + 213435631.

It is an arithmetic number, because the mean of its divisors is an integer number (213435631).

Almost surely, 2^426871261 is an apocalyptic number.

It is an amenable number.

426871261 is a deficient number, since it is larger than the sum of its proper divisors (1).

426871261 is an equidigital number, since it uses as much as digits as its factorization.

426871261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 426871261 is about 20660.8630265050. The cubic root of 426871261 is about 752.9491355256.

The spelling of 426871261 in words is "four hundred twenty-six million, eight hundred seventy-one thousand, two hundred sixty-one".