Base | Representation |
---|---|
bin | 11000000101001… |
… | …001110011001010 |
3 | 1001011012112100200 |
4 | 120011021303022 |
5 | 1311411112132 |
6 | 104031113030 |
7 | 13003656231 |
oct | 3005116312 |
9 | 1034175320 |
10 | 404004042 |
11 | 198060242 |
12 | b3372776 |
13 | 65913c60 |
14 | 3b927b18 |
15 | 25704d7c |
hex | 18149cca |
404004042 has 24 divisors (see below), whose sum is σ = 942676644. Its totient is φ = 124308864.
The previous prime is 404004023. The next prime is 404004043. The reversal of 404004042 is 240400404.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 315098001 + 88906041 = 17751^2 + 9429^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (404004043) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863023 + ... + 863490.
Almost surely, 2404004042 is an apocalyptic number.
404004042 is an abundant number, since it is smaller than the sum of its proper divisors (538672602).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
404004042 is a wasteful number, since it uses less digits than its factorization.
404004042 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1726534 (or 1726531 counting only the distinct ones).
The product of its (nonzero) digits is 512, while the sum is 18.
The square root of 404004042 is about 20099.8517904984. The cubic root of 404004042 is about 739.2566445636.
Adding to 404004042 its reverse (240400404), we get a palindrome (644404446).
It can be divided in two parts, 40400404 and 2, that multiplied together give a palindrome (80800808).
The spelling of 404004042 in words is "four hundred four million, four thousand, forty-two".
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