401205115 has 4 divisors (see below), whose sum is σ = 481446144. Its totient is φ = 320964088.

The previous prime is 401205109. The next prime is 401205127. The reversal of 401205115 is 511502104.

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 401205115 - 2⁹ = 401204603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401205092 and 401205101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40120507 + ... + 40120516.

It is an arithmetic number, because the mean of its divisors is an integer number (120361536).

Almost surely, 2^401205115 is an apocalyptic number.

401205115 is a deficient number, since it is larger than the sum of its proper divisors (80241029).

401205115 is an equidigital number, since it uses as much as digits as its factorization.

401205115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80241028.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 401205115 is about 20030.1052168979. The cubic root of 401205115 is about 737.5455048050.

Adding to 401205115 its reverse (511502104), we get a palindrome (912707219).

The spelling of 401205115 in words is "four hundred one million, two hundred five thousand, one hundred fifteen".