1403001 has 10 divisors (see below), whose sum is σ = 2095962. Its totient is φ = 935280.

The previous prime is 1402957. The next prime is 1403009. The reversal of 1403001 is 1003041.

It can be written as a sum of positive squares in only one way, i.e., 1071225 + 331776 = 1035^2 + 576^2 .

It is not a de Polignac number, because 1403001 - 2⁶ = 1402937 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1403009) 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 9 ways as a sum of consecutive naturals, for example, 8580 + ... + 8741.

2^1403001 is an apocalyptic number.

It is an amenable number.

1403001 is a deficient number, since it is larger than the sum of its proper divisors (692961).

1403001 is an equidigital number, since it uses as much as digits as its factorization.

1403001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17333 (or 17324 counting only the distinct ones).

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

The square root of 1403001 is about 1184.4834317119. The cubic root of 1403001 is about 111.9487701505.

Adding to 1403001 its reverse (1003041), we get a palindrome (2406042).

The spelling of 1403001 in words is "one million, four hundred three thousand, one".