420130170 has 24 divisors (see below), whose sum is σ = 1092338676. Its totient is φ = 112034688.

The previous prime is 420130103. The next prime is 420130171. The reversal of 420130170 is 71031024.

It can be written as a sum of positive squares in 2 ways, for example, as 390023001 + 30107169 = 19749^2 + 5487^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420130171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2333967 + ... + 2334146.

Almost surely, 2^420130170 is an apocalyptic number.

420130170 is an abundant number, since it is smaller than the sum of its proper divisors (672208506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420130170 is a wasteful number, since it uses less digits than its factorization.

420130170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668126 (or 4668123 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 420130170 is about 20497.0771087002. The cubic root of 420130170 is about 748.9645979145.

Adding to 420130170 its reverse (71031024), we get a palindrome (491161194).

The spelling of 420130170 in words is "four hundred twenty million, one hundred thirty thousand, one hundred seventy".