401042441 has 2 divisors, whose sum is σ = 401042442. Its totient is φ = 401042440.

The previous prime is 401042431. The next prime is 401042497. The reversal of 401042441 is 144240104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400000000 + 1042441 = 20000^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 401042441 - 2¹⁸ = 400780297 is a prime.

It is not a weakly prime, because it can be changed into another prime (401042401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200521220 + 200521221.

It is an arithmetic number, because the mean of its divisors is an integer number (200521221).

Almost surely, 2^401042441 is an apocalyptic number.

It is an amenable number.

401042441 is a deficient number, since it is larger than the sum of its proper divisors (1).

401042441 is an equidigital number, since it uses as much as digits as its factorization.

401042441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 401042441 is about 20026.0440676635. The cubic root of 401042441 is about 737.4458087539.

Adding to 401042441 its reverse (144240104), we get a palindrome (545282545).

The spelling of 401042441 in words is "four hundred one million, forty-two thousand, four hundred forty-one".