420775166 has 16 divisors (see below), whose sum is σ = 724430304. Its totient is φ = 179556864.

The previous prime is 420775163. The next prime is 420775171. The reversal of 420775166 is 661577024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420775163) 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, 61235 + ... + 67758.

It is an arithmetic number, because the mean of its divisors is an integer number (45276894).

Almost surely, 2^420775166 is an apocalyptic number.

420775166 is a deficient number, since it is larger than the sum of its proper divisors (303655138).

420775166 is a wasteful number, since it uses less digits than its factorization.

420775166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129235.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 420775166 is about 20512.8049276543. The cubic root of 420775166 is about 749.3476793200.

The spelling of 420775166 in words is "four hundred twenty million, seven hundred seventy-five thousand, one hundred sixty-six".