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404124023 = 1850321841
BaseRepresentation
bin11000000101100…
…111000101110111
31001011102121221102
4120011213011313
51311423432043
6104033440315
713004666102
oct3005470567
91034377842
10404124023
111981323a6
12b341009b
1365956754
143b959739
152572a6b8
hex18167177

404124023 has 4 divisors (see below), whose sum is σ = 404164368. Its totient is φ = 404083680.

The previous prime is 404124011. The next prime is 404124031. The reversal of 404124023 is 320421404.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 404124023 - 28 = 404123767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404123986 and 404124004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404124043) 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, 7583 + ... + 29423.

It is an arithmetic number, because the mean of its divisors is an integer number (101041092).

Almost surely, 2404124023 is an apocalyptic number.

404124023 is a deficient number, since it is larger than the sum of its proper divisors (40345).

404124023 is a wasteful number, since it uses less digits than its factorization.

404124023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40344.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 404124023 is about 20102.8361929356. The cubic root of 404124023 is about 739.3298187264.

Adding to 404124023 its reverse (320421404), we get a palindrome (724545427).

The spelling of 404124023 in words is "four hundred four million, one hundred twenty-four thousand, twenty-three".

Divisors: 1 18503 21841 404124023