420201166 has 24 divisors (see below), whose sum is σ = 799865496. Its totient is φ = 163714320.

The previous prime is 420201163. The next prime is 420201239. The reversal of 420201166 is 661102024.

It is a super-3 number, since 3×420201166³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420201161) 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, 193821 + ... + 195976.

It is an arithmetic number, because the mean of its divisors is an integer number (33327729).

Almost surely, 2^420201166 is an apocalyptic number.

420201166 is a deficient number, since it is larger than the sum of its proper divisors (379664330).

420201166 is a wasteful number, since it uses less digits than its factorization.

420201166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389824 (or 389817 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 420201166 is about 20498.8088922259. The cubic root of 420201166 is about 749.0067836460.

The spelling of 420201166 in words is "four hundred twenty million, two hundred one thousand, one hundred sixty-six".