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1214239 = 132331131
BaseRepresentation
bin100101000011100011111
32021200121211
410220130133
5302323424
642005251
713215025
oct4503437
92250554
101214239
1175a304
124a6827
133368b0
14238715
1518eb94
hex12871f

1214239 has 16 divisors (see below), whose sum is σ = 1419264. Its totient is φ = 1029600.

The previous prime is 1214237. The next prime is 1214261. The reversal of 1214239 is 9324121.

It is not a de Polignac number, because 1214239 - 21 = 1214237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214237) 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 15 ways as a sum of consecutive naturals, for example, 9204 + ... + 9334.

It is an arithmetic number, because the mean of its divisors is an integer number (88704).

21214239 is an apocalyptic number.

1214239 is a deficient number, since it is larger than the sum of its proper divisors (205025).

1214239 is a wasteful number, since it uses less digits than its factorization.

1214239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198.

The product of its digits is 432, while the sum is 22.

The square root of 1214239 is about 1101.9251335731. The cubic root of 1214239 is about 106.6845163271.

The spelling of 1214239 in words is "one million, two hundred fourteen thousand, two hundred thirty-nine".

Divisors: 1 13 23 31 131 299 403 713 1703 3013 4061 9269 39169 52793 93403 1214239