424236561 has 24 divisors (see below), whose sum is σ = 675792000. Its totient is φ = 235865952.

The previous prime is 424236559. The next prime is 424236569. The reversal of 424236561 is 165632424.

It is not a de Polignac number, because 424236561 - 2¹ = 424236559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424236569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33561 + ... + 44438.

It is an arithmetic number, because the mean of its divisors is an integer number (28158000).

Almost surely, 2^424236561 is an apocalyptic number.

It is an amenable number.

424236561 is a deficient number, since it is larger than the sum of its proper divisors (251555439).

424236561 is a wasteful number, since it uses less digits than its factorization.

424236561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78053 (or 78046 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 424236561 is about 20597.0036898574. The cubic root of 424236561 is about 751.3968403897.

Adding to 424236561 its reverse (165632424), we get a palindrome (589868985).

It can be divided in two parts, 42423 and 6561, that added together give a palindrome (48984).

The spelling of 424236561 in words is "four hundred twenty-four million, two hundred thirty-six thousand, five hundred sixty-one".