426203261 has 6 divisors (see below), whose sum is σ = 468471486. Its totient is φ = 387457400.

The previous prime is 426203249. The next prime is 426203287. The reversal of 426203261 is 162302624.

It can be written as a sum of positive squares in only one way, i.e., 361722361 + 64480900 = 19019^2 + 8030^2 .

It is not a de Polignac number, because 426203261 - 2¹⁰ = 426202237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426203261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426203201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1761050 + ... + 1761291.

It is an arithmetic number, because the mean of its divisors is an integer number (78078581).

Almost surely, 2^426203261 is an apocalyptic number.

It is an amenable number.

426203261 is a deficient number, since it is larger than the sum of its proper divisors (42268225).

426203261 is a wasteful number, since it uses less digits than its factorization.

426203261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522363 (or 3522352 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 426203261 is about 20644.6908671455. The cubic root of 426203261 is about 752.5561734794.

Adding to 426203261 its reverse (162302624), we get a palindrome (588505885).

The spelling of 426203261 in words is "four hundred twenty-six million, two hundred three thousand, two hundred sixty-one".