420562561 has 8 divisors (see below), whose sum is σ = 428097600. Its totient is φ = 413041200.

The previous prime is 420562559. The next prime is 420562603. The reversal of 420562561 is 165265024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420562561 - 2¹ = 420562559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420569561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74020 + ... + 79498.

It is an arithmetic number, because the mean of its divisors is an integer number (53512200).

Almost surely, 2^420562561 is an apocalyptic number.

It is an amenable number.

420562561 is a deficient number, since it is larger than the sum of its proper divisors (7535039).

420562561 is a wasteful number, since it uses less digits than its factorization.

420562561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6839.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 420562561 is about 20507.6220220678. The cubic root of 420562561 is about 749.2214504642.

It can be divided in two parts, 4205 and 62561, that added together give a palindrome (66766).

The spelling of 420562561 in words is "four hundred twenty million, five hundred sixty-two thousand, five hundred sixty-one".