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1043221 is a prime number
BaseRepresentation
bin11111110101100010101
31222000000211
43332230111
5231340341
634205421
711603314
oct3765425
91860024
101043221
11652873
12423871
132a6aba
141d227b
15159181
hexfeb15

1043221 has 2 divisors, whose sum is σ = 1043222. Its totient is φ = 1043220.

The previous prime is 1043213. The next prime is 1043279. The reversal of 1043221 is 1223401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030225 + 12996 = 1015^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043221 - 23 = 1043213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043201) by changing a digit.

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 as a sum of consecutive naturals, namely, 521610 + 521611.

It is an arithmetic number, because the mean of its divisors is an integer number (521611).

21043221 is an apocalyptic number.

It is an amenable number.

1043221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043221 is an equidigital number, since it uses as much as digits as its factorization.

1043221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1043221 is about 1021.3819070260. The cubic root of 1043221 is about 101.4204283050.

Adding to 1043221 its reverse (1223401), we get a palindrome (2266622).

The spelling of 1043221 in words is "one million, forty-three thousand, two hundred twenty-one".