420015163 has 4 divisors (see below), whose sum is σ = 420437440. Its totient is φ = 419592888.

The previous prime is 420015131. The next prime is 420015181. The reversal of 420015163 is 361510024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420015163 - 2⁵ = 420015131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420015263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209643 + ... + 211636.

It is an arithmetic number, because the mean of its divisors is an integer number (105109360).

Almost surely, 2^420015163 is an apocalyptic number.

420015163 is a deficient number, since it is larger than the sum of its proper divisors (422277).

420015163 is an equidigital number, since it uses as much as digits as its factorization.

420015163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422276.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 420015163 is about 20494.2714679005. The cubic root of 420015163 is about 748.8962508175.

Adding to 420015163 its reverse (361510024), we get a palindrome (781525187).

The spelling of 420015163 in words is "four hundred twenty million, fifteen thousand, one hundred sixty-three".