400011042205 has 8 divisors (see below), whose sum is σ = 480020184504. Its totient is φ = 320004211200.

The previous prime is 400011042199. The next prime is 400011042239. The reversal of 400011042205 is 502240110004.

It can be written as a sum of positive squares in 4 ways, for example, as 264997418841 + 135013623364 = 514779^2 + 367442^2 .

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

It is not a de Polignac number, because 400011042205 - 2²⁵ = 399977487773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171036 + ... + 910645.

It is an arithmetic number, because the mean of its divisors is an integer number (60002523063).

Almost surely, 2^400011042205 is an apocalyptic number.

It is an amenable number.

400011042205 is a deficient number, since it is larger than the sum of its proper divisors (80009142299).

400011042205 is a wasteful number, since it uses less digits than its factorization.

400011042205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155647.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 400011042205 its reverse (502240110004), we get a palindrome (902251152209).

The spelling of 400011042205 in words is "four hundred billion, eleven million, forty-two thousand, two hundred five".