421000115 has 4 divisors (see below), whose sum is σ = 505200144. Its totient is φ = 336800088.

The previous prime is 421000093. The next prime is 421000117. The reversal of 421000115 is 511000124.

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 421000115 - 2⁶ = 421000051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421000115.

It is not an unprimeable number, because it can be changed into a prime (421000117) 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, 42100007 + ... + 42100016.

It is an arithmetic number, because the mean of its divisors is an integer number (126300036).

Almost surely, 2^421000115 is an apocalyptic number.

421000115 is a deficient number, since it is larger than the sum of its proper divisors (84200029).

421000115 is an equidigital number, since it uses as much as digits as its factorization.

421000115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84200028.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 421000115 is about 20518.2873310615. The cubic root of 421000115 is about 749.4811908284.

Adding to 421000115 its reverse (511000124), we get a palindrome (932000239).

Subtracting 421000115 from its reverse (511000124), we obtain a palindrome (90000009).

The spelling of 421000115 in words is "four hundred twenty-one million, one hundred fifteen", and thus it is an aban number.