401133243 has 32 divisors (see below), whose sum is σ = 629547520. Its totient is φ = 222393600.

The previous prime is 401133233. The next prime is 401133247. The reversal of 401133243 is 342331104.

It is not a de Polignac number, because 401133243 - 2⁸ = 401132987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (401133247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466548 + ... + 467406.

It is an arithmetic number, because the mean of its divisors is an integer number (19673360).

Almost surely, 2^401133243 is an apocalyptic number.

401133243 is a deficient number, since it is larger than the sum of its proper divisors (228414277).

401133243 is a wasteful number, since it uses less digits than its factorization.

401133243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 401133243 is about 20028.3110371294. The cubic root of 401133243 is about 737.5014608034.

Adding to 401133243 its reverse (342331104), we get a palindrome (743464347).

The spelling of 401133243 in words is "four hundred one million, one hundred thirty-three thousand, two hundred forty-three".