421145163 has 20 divisors (see below), whose sum is σ = 650815440. Its totient is φ = 271080432.

The previous prime is 421145149. The next prime is 421145171. The reversal of 421145163 is 361541124.

It is a happy number.

It is not a de Polignac number, because 421145163 - 2¹⁴ = 421128779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (421145113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 87295 + ... + 91992.

It is an arithmetic number, because the mean of its divisors is an integer number (32540772).

Almost surely, 2^421145163 is an apocalyptic number.

421145163 is a deficient number, since it is larger than the sum of its proper divisors (229670277).

421145163 is a wasteful number, since it uses less digits than its factorization.

421145163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179328 (or 179319 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 421145163 is about 20521.8216296702. The cubic root of 421145163 is about 749.5672543563.

Adding to 421145163 its reverse (361541124), we get a palindrome (782686287).

The spelling of 421145163 in words is "four hundred twenty-one million, one hundred forty-five thousand, one hundred sixty-three".