401140243 has 8 divisors (see below), whose sum is σ = 459122688. Its totient is φ = 343326984.

The previous prime is 401140241. The next prime is 401140307. The reversal of 401140243 is 342041104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401140243 - 2¹ = 401140241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401140243.

It is not an unprimeable number, because it can be changed into a prime (401140241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37171 + ... + 46732.

It is an arithmetic number, because the mean of its divisors is an integer number (57390336).

Almost surely, 2^401140243 is an apocalyptic number.

401140243 is a deficient number, since it is larger than the sum of its proper divisors (57982445).

401140243 is an equidigital number, since it uses as much as digits as its factorization.

401140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84593.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 401140243 is about 20028.4857889956. The cubic root of 401140243 is about 737.5057507164.

Adding to 401140243 its reverse (342041104), we get a palindrome (743181347).

The spelling of 401140243 in words is "four hundred one million, one hundred forty thousand, two hundred forty-three".