420440115 has 32 divisors (see below), whose sum is σ = 726174720. Its totient is φ = 207084416.

The previous prime is 420440101. The next prime is 420440123. The reversal of 420440115 is 511044024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420440115 - 2⁹ = 420439603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420440091 and 420440100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11007 + ... + 31016.

It is an arithmetic number, because the mean of its divisors is an integer number (22692960).

Almost surely, 2^420440115 is an apocalyptic number.

420440115 is a deficient number, since it is larger than the sum of its proper divisors (305734605).

420440115 is a wasteful number, since it uses less digits than its factorization.

420440115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42083.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 420440115 is about 20504.6364269157. The cubic root of 420440115 is about 749.1487319336.

Adding to 420440115 its reverse (511044024), we get a palindrome (931484139).

The spelling of 420440115 in words is "four hundred twenty million, four hundred forty thousand, one hundred fifteen".