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212942 = 2176263
BaseRepresentation
bin110011111111001110
3101211002202
4303333032
523303232
64321502
71544552
oct637716
9354082
10212942
11135a94
12a3292
1375c02
1457862
1543162
hex33fce

212942 has 8 divisors (see below), whose sum is σ = 338256. Its totient is φ = 100192.

The previous prime is 212923. The next prime is 212969. The reversal of 212942 is 249212.

212942 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3098 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (42282).

2212942 is an apocalyptic number.

212942 is a deficient number, since it is larger than the sum of its proper divisors (125314).

212942 is a wasteful number, since it uses less digits than its factorization.

212942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282.

The product of its digits is 288, while the sum is 20.

The square root of 212942 is about 461.4563901389. The cubic root of 212942 is about 59.7155050274.

The spelling of 212942 in words is "two hundred twelve thousand, nine hundred forty-two".

Divisors: 1 2 17 34 6263 12526 106471 212942