401240403 has 12 divisors (see below), whose sum is σ = 585545688. Its totient is φ = 264735360.

The previous prime is 401240393. The next prime is 401240407. The reversal of 401240403 is 304042104.

It is not a de Polignac number, because 401240403 - 2¹⁰ = 401239379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401240407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228933 + ... + 230678.

It is an arithmetic number, because the mean of its divisors is an integer number (48795474).

Almost surely, 2^401240403 is an apocalyptic number.

401240403 is a deficient number, since it is larger than the sum of its proper divisors (184305285).

401240403 is a wasteful number, since it uses less digits than its factorization.

401240403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459714 (or 459711 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 401240403 is about 20030.9860715842. The cubic root of 401240403 is about 737.5671277785.

Adding to 401240403 its reverse (304042104), we get a palindrome (705282507).

The spelling of 401240403 in words is "four hundred one million, two hundred forty thousand, four hundred three".