420343471 has 4 divisors (see below), whose sum is σ = 420959592. Its totient is φ = 419727352.

The previous prime is 420343459. The next prime is 420343481. The reversal of 420343471 is 174343024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420343471 - 2¹⁷ = 420212399 is a prime.

It is a super-3 number, since 3×420343471³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420343481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307036 + ... + 308401.

It is an arithmetic number, because the mean of its divisors is an integer number (105239898).

Almost surely, 2^420343471 is an apocalyptic number.

420343471 is a deficient number, since it is larger than the sum of its proper divisors (616121).

420343471 is an equidigital number, since it uses as much as digits as its factorization.

420343471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616120.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 420343471 is about 20502.2796537361. The cubic root of 420343471 is about 749.0913267879.

Adding to 420343471 its reverse (174343024), we get a palindrome (594686495).

It can be divided in two parts, 4203 and 43471, that added together give a palindrome (47674).

The spelling of 420343471 in words is "four hundred twenty million, three hundred forty-three thousand, four hundred seventy-one".