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143212 = 2235803
BaseRepresentation
bin100010111101101100
321021110011
4202331230
514040322
63023004
71134346
oct427554
9237404
10143212
1198663
126aa64
1350254
143a296
152c677
hex22f6c

143212 has 6 divisors (see below), whose sum is σ = 250628. Its totient is φ = 71604.

The previous prime is 143197. The next prime is 143239. The reversal of 143212 is 212341.

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 143192 and 143201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17898 + ... + 17905.

2143212 is an apocalyptic number.

It is an amenable number.

143212 is a deficient number, since it is larger than the sum of its proper divisors (107416).

143212 is a wasteful number, since it uses less digits than its factorization.

143212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35807 (or 35805 counting only the distinct ones).

The product of its digits is 48, while the sum is 13.

The square root of 143212 is about 378.4336137290. The cubic root of 143212 is about 52.3190444264.

Adding to 143212 its reverse (212341), we get a palindrome (355553).

It can be divided in two parts, 1432 and 12, that added together give a square (1444 = 382).

The spelling of 143212 in words is "one hundred forty-three thousand, two hundred twelve", and thus it is an iban number.

Divisors: 1 2 4 35803 71606 143212