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13221042 = 232975983
BaseRepresentation
bin110010011011…
…110010110010
3220212200212020
4302123302302
511341033132
61151212310
7220243212
oct62336262
926780766
1013221042
11751018a
124517096
13297ba03
141a82242
15126252c
hexc9bcb2

13221042 has 16 divisors (see below), whose sum is σ = 27354240. Its totient is φ = 4254992.

The previous prime is 13221037. The next prime is 13221059. The reversal of 13221042 is 24012231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37818 + ... + 38165.

It is an arithmetic number, because the mean of its divisors is an integer number (1709640).

Almost surely, 213221042 is an apocalyptic number.

13221042 is an abundant number, since it is smaller than the sum of its proper divisors (14133198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221042 is a wasteful number, since it uses less digits than its factorization.

13221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76017.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13221042 is about 3636.0750817330. The cubic root of 13221042 is about 236.4586622665.

Adding to 13221042 its reverse (24012231), we get a palindrome (37233273).

The spelling of 13221042 in words is "thirteen million, two hundred twenty-one thousand, forty-two".

Divisors: 1 2 3 6 29 58 87 174 75983 151966 227949 455898 2203507 4407014 6610521 13221042