401404243 has 8 divisors (see below), whose sum is σ = 404296256. Its totient is φ = 398520000.

The previous prime is 401404193. The next prime is 401404249. The reversal of 401404243 is 342404104.

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

It is a cyclic number.

It is not a de Polignac number, because 401404243 - 2⁹ = 401403731 is a prime.

It is a super-2 number, since 2×401404243² = 322250732596806098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401404249) 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, 134455 + ... + 137407.

It is an arithmetic number, because the mean of its divisors is an integer number (50537032).

Almost surely, 2^401404243 is an apocalyptic number.

401404243 is a deficient number, since it is larger than the sum of its proper divisors (2892013).

401404243 is a wasteful number, since it uses less digits than its factorization.

401404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 401404243 is about 20035.0753180516. The cubic root of 401404243 is about 737.6675053020.

Adding to 401404243 its reverse (342404104), we get a palindrome (743808347).

The spelling of 401404243 in words is "four hundred one million, four hundred four thousand, two hundred forty-three".