401044121 has 4 divisors (see below), whose sum is σ = 401721012. Its totient is φ = 400367232.

The previous prime is 401044087. The next prime is 401044159. The reversal of 401044121 is 121440104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77440000 + 323604121 = 8800^2 + 17989^2 .

It is a cyclic number.

It is not a de Polignac number, because 401044121 - 2²⁶ = 333935257 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 401044121.

It is not an unprimeable number, because it can be changed into a prime (401064121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337556 + ... + 338741.

It is an arithmetic number, because the mean of its divisors is an integer number (100430253).

Almost surely, 2^401044121 is an apocalyptic number.

It is an amenable number.

401044121 is a deficient number, since it is larger than the sum of its proper divisors (676891).

401044121 is an equidigital number, since it uses as much as digits as its factorization.

401044121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676890.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 401044121 is about 20026.0860129981. The cubic root of 401044121 is about 737.4468384930.

Adding to 401044121 its reverse (121440104), we get a palindrome (522484225).

The spelling of 401044121 in words is "four hundred one million, forty-four thousand, one hundred twenty-one".