422613261 has 16 divisors (see below), whose sum is σ = 715536000. Its totient is φ = 241493184.

The previous prime is 422613253. The next prime is 422613263. The reversal of 422613261 is 162316224.

422613261 is a `hidden beast` number, since 4 + 22 + 613 + 26 + 1 = 666.

It is not a de Polignac number, because 422613261 - 2³ = 422613253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422613263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1117836 + ... + 1118213.

It is an arithmetic number, because the mean of its divisors is an integer number (44721000).

Almost surely, 2^422613261 is an apocalyptic number.

It is an amenable number.

422613261 is a deficient number, since it is larger than the sum of its proper divisors (292922739).

422613261 is a wasteful number, since it uses less digits than its factorization.

422613261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236065 (or 2236059 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 422613261 is about 20557.5597044007. The cubic root of 422613261 is about 750.4372330535.

Adding to 422613261 its reverse (162316224), we get a palindrome (584929485).

The spelling of 422613261 in words is "four hundred twenty-two million, six hundred thirteen thousand, two hundred sixty-one".