420530671 has 8 divisors (see below), whose sum is σ = 460591488. Its totient is φ = 380775000.

The previous prime is 420530647. The next prime is 420530681. The reversal of 420530671 is 176035024.

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 420530671 - 2⁵ = 420530639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420530681) 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, 73395 + ... + 78916.

It is an arithmetic number, because the mean of its divisors is an integer number (57573936).

Almost surely, 2^420530671 is an apocalyptic number.

420530671 is a deficient number, since it is larger than the sum of its proper divisors (40060817).

420530671 is a wasteful number, since it uses less digits than its factorization.

420530671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152573.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 420530671 is about 20506.8444915350. The cubic root of 420530671 is about 749.2025129123.

Adding to 420530671 its reverse (176035024), we get a palindrome (596565695).

It can be divided in two parts, 420530 and 671, that added together give a square (421201 = 649²).

The spelling of 420530671 in words is "four hundred twenty million, five hundred thirty thousand, six hundred seventy-one".