420009115 has 4 divisors (see below), whose sum is σ = 504010944. Its totient is φ = 336007288.

The previous prime is 420009071. The next prime is 420009119. The reversal of 420009115 is 511900024.

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 420009115 - 2²⁵ = 386454683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420009119) 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 3 ways as a sum of consecutive naturals, for example, 42000907 + ... + 42000916.

It is an arithmetic number, because the mean of its divisors is an integer number (126002736).

Almost surely, 2^420009115 is an apocalyptic number.

420009115 is a deficient number, since it is larger than the sum of its proper divisors (84001829).

420009115 is an equidigital number, since it uses as much as digits as its factorization.

420009115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84001828.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 420009115 is about 20494.1239139418. The cubic root of 420009115 is about 748.8926562280.

Adding to 420009115 its reverse (511900024), we get a palindrome (931909139).

It can be divided in two parts, 42000 and 9115, that added together give a palindrome (51115).

The spelling of 420009115 in words is "four hundred twenty million, nine thousand, one hundred fifteen".