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1340001 = 32132881
BaseRepresentation
bin101000111001001100001
32112002010200
411013021201
5320340001
644415413
714250465
oct5071141
92462120
101340001
11835843
12547569
1337bc00
1426c4a5
151b7086
hex147261

1340001 has 18 divisors (see below), whose sum is σ = 2098278. Its totient is φ = 823680.

The previous prime is 1339993. The next prime is 1340011. The reversal of 1340001 is 1000431.

It can be written as a sum of positive squares in 3 ways, for example, as 40401 + 1299600 = 201^2 + 1140^2 .

It is not a de Polignac number, because 1340001 - 23 = 1339993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340011) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1081 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (116571).

21340001 is an apocalyptic number.

It is an amenable number.

1340001 is a deficient number, since it is larger than the sum of its proper divisors (758277).

1340001 is a wasteful number, since it uses less digits than its factorization.

1340001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1340001 is about 1157.5841222132. The cubic root of 1340001 is about 110.2474045697.

Adding to 1340001 its reverse (1000431), we get a palindrome (2340432).

The spelling of 1340001 in words is "one million, three hundred forty thousand, one".

Divisors: 1 3 9 13 39 117 169 507 881 1521 2643 7929 11453 34359 103077 148889 446667 1340001