1401003 has 16 divisors (see below), whose sum is σ = 2185600. Its totient is φ = 884520.

The previous prime is 1400989. The next prime is 1401007. The reversal of 1401003 is 3001041.

It is not a de Polignac number, because 1401003 - 2⁶ = 1400939 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (136600).

2^1401003 is an apocalyptic number.

1401003 is a deficient number, since it is larger than the sum of its proper divisors (784597).

1401003 is a wasteful number, since it uses less digits than its factorization.

1401003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2753 counting only the distinct ones).

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

The square root of 1401003 is about 1183.6397255922. The cubic root of 1401003 is about 111.8956031882.

Adding to 1401003 its reverse (3001041), we get a palindrome (4402044).

The spelling of 1401003 in words is "one million, four hundred one thousand, three".