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1321201 = 71731091
BaseRepresentation
bin101000010100011110001
32111010100101
411002203301
5314234301
644152401
714141620
oct5024361
92433311
101321201
11822702
12538701
1337349b
142656b7
151b1701
hex1428f1

1321201 has 8 divisors (see below), whose sum is σ = 1520064. Its totient is φ = 1124880.

The previous prime is 1321193. The next prime is 1321213. The reversal of 1321201 is 1021231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321201 - 23 = 1321193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (190008).

21321201 is an apocalyptic number.

It is an amenable number.

1321201 is a deficient number, since it is larger than the sum of its proper divisors (198863).

1321201 is a wasteful number, since it uses less digits than its factorization.

1321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1321201 is about 1149.4350786365. The cubic root of 1321201 is about 109.7293899167.

Adding to 1321201 its reverse (1021231), we get a palindrome (2342432).

The spelling of 1321201 in words is "one million, three hundred twenty-one thousand, two hundred one".

Divisors: 1 7 173 1091 1211 7637 188743 1321201