420352005171 has 16 divisors (see below), whose sum is σ = 656159228928. Its totient is φ = 234342580800.

The previous prime is 420352005169. The next prime is 420352005173. The reversal of 420352005171 is 171500253024.

It is an interprime number because it is at equal distance from previous prime (420352005169) and next prime (420352005173).

It is not a de Polignac number, because 420352005171 - 2¹ = 420352005169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420352005173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244105995 + ... + 244107716.

It is an arithmetic number, because the mean of its divisors is an integer number (41009951808).

Almost surely, 2^420352005171 is an apocalyptic number.

420352005171 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

420352005171 is a deficient number, since it is larger than the sum of its proper divisors (235807223757).

420352005171 is a wasteful number, since it uses less digits than its factorization.

420352005171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488213762.

The product of its (nonzero) digits is 8400, while the sum is 30.

Adding to 420352005171 its reverse (171500253024), we get a palindrome (591852258195).

The spelling of 420352005171 in words is "four hundred twenty billion, three hundred fifty-two million, five thousand, one hundred seventy-one".