1303641 has 16 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 851760.

The previous prime is 1303633. The next prime is 1303667. The reversal of 1303641 is 1463031.

It is not a de Polignac number, because 1303641 - 2³ = 1303633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303241) 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 15 ways as a sum of consecutive naturals, for example, 976 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2^1303641 is an apocalyptic number.

It is an amenable number.

1303641 is a deficient number, since it is larger than the sum of its proper divisors (666279).

1303641 is an equidigital number, since it uses as much as digits as its factorization.

1303641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1303641 is about 1141.7709928002. The cubic root of 1303641 is about 109.2410846493.

Adding to 1303641 its reverse (1463031), we get a palindrome (2766672).

The spelling of 1303641 in words is "one million, three hundred three thousand, six hundred forty-one".