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404243 = 7174379
BaseRepresentation
bin1100010101100010011
3202112111222
41202230103
5100413433
612355255
73302360
oct1425423
9675458
10404243
11256794
12175b2b
13111cc8
14a7467
157eb98
hex62b13

404243 has 16 divisors (see below), whose sum is σ = 506880. Its totient is φ = 314496.

The previous prime is 404221. The next prime is 404249. The reversal of 404243 is 342404.

It is not a de Polignac number, because 404243 - 210 = 403219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5078 + ... + 5156.

It is an arithmetic number, because the mean of its divisors is an integer number (31680).

2404243 is an apocalyptic number.

404243 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

404243 is a deficient number, since it is larger than the sum of its proper divisors (102637).

404243 is a wasteful number, since it uses less digits than its factorization.

404243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 404243 is about 635.8010695178. The cubic root of 404243 is about 73.9402366268.

Adding to 404243 its reverse (342404), we get a palindrome (746647).

The spelling of 404243 in words is "four hundred four thousand, two hundred forty-three", and thus it is an iban number.

Divisors: 1 7 17 43 79 119 301 553 731 1343 3397 5117 9401 23779 57749 404243