401115145 has 4 divisors (see below), whose sum is σ = 481338180. Its totient is φ = 320892112.

The previous prime is 401115133. The next prime is 401115151. The reversal of 401115145 is 541511104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 184525056 + 216590089 = 13584^2 + 14717^2 .

It is a cyclic number.

It is not a de Polignac number, because 401115145 - 2¹⁹ = 400590857 is a prime.

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, 40111510 + ... + 40111519.

It is an arithmetic number, because the mean of its divisors is an integer number (120334545).

Almost surely, 2^401115145 is an apocalyptic number.

It is an amenable number.

401115145 is a deficient number, since it is larger than the sum of its proper divisors (80223035).

401115145 is an equidigital number, since it uses as much as digits as its factorization.

401115145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80223034.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 401115145 is about 20027.8592215943. The cubic root of 401115145 is about 737.4903693083.

Adding to 401115145 its reverse (541511104), we get a palindrome (942626249).

The spelling of 401115145 in words is "four hundred one million, one hundred fifteen thousand, one hundred forty-five".