404120205 has 64 divisors (see below), whose sum is σ = 738720000. Its totient is φ = 209534976.

The previous prime is 404120203. The next prime is 404120207. The reversal of 404120205 is 502021404.

It is an interprime number because it is at equal distance from previous prime (404120203) and next prime (404120207).

It is not a de Polignac number, because 404120205 - 2¹ = 404120203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404120201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 899821 + ... + 900269.

It is an arithmetic number, because the mean of its divisors is an integer number (11542500).

Almost surely, 2^404120205 is an apocalyptic number.

404120205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404120205 is a deficient number, since it is larger than the sum of its proper divisors (334599795).

404120205 is a wasteful number, since it uses less digits than its factorization.

404120205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 404120205 is about 20102.7412309864. The cubic root of 404120205 is about 739.3274904229.

Adding to 404120205 its reverse (502021404), we get a palindrome (906141609).

The spelling of 404120205 in words is "four hundred four million, one hundred twenty thousand, two hundred five".