1043001 has 18 divisors (see below), whose sum is σ = 1604382. Its totient is φ = 652800.

The previous prime is 1042997. The next prime is 1043011. The reversal of 1043001 is 1003401.

It can be written as a sum of positive squares in 3 ways, for example, as 767376 + 275625 = 876^2 + 525^2 .

It is not a de Polignac number, because 1043001 - 2² = 1042997 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 (1043011) 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 in 17 ways as a sum of consecutive naturals, for example, 2401 + ... + 2801.

2^1043001 is an apocalyptic number.

It is an amenable number.

1043001 is a deficient number, since it is larger than the sum of its proper divisors (561381).

1043001 is a wasteful number, since it uses less digits than its factorization.

1043001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 421 counting only the distinct ones).

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

The square root of 1043001 is about 1021.2742041195. The cubic root of 1043001 is about 101.4132984438.

Adding to 1043001 its reverse (1003401), we get a palindrome (2046402).

The spelling of 1043001 in words is "one million, forty-three thousand, one".