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212126 = 2172367
BaseRepresentation
bin110011110010011110
3101202222112
4303302132
523242001
64314022
71542305
oct636236
9352875
10212126
11135412
12a2912
1375725
145743c
1542cbb
hex33c9e

212126 has 12 divisors (see below), whose sum is σ = 338928. Its totient is φ = 99552.

The previous prime is 212123. The next prime is 212131. The reversal of 212126 is 621212.

It is a self number, because there is not a number n which added to its sum of digits gives 212126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395 + ... + 761.

It is an arithmetic number, because the mean of its divisors is an integer number (28244).

2212126 is an apocalyptic number.

212126 is a deficient number, since it is larger than the sum of its proper divisors (126802).

212126 is a wasteful number, since it uses less digits than its factorization.

212126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 386 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 212126 is about 460.5713842609. The cubic root of 212126 is about 59.6391301974.

Adding to 212126 its reverse (621212), we get a palindrome (833338).

The spelling of 212126 in words is "two hundred twelve thousand, one hundred twenty-six".

Divisors: 1 2 17 34 289 367 578 734 6239 12478 106063 212126