1303140021 has 8 divisors (see below), whose sum is σ = 1766969760. Its totient is φ = 854035152.

The previous prime is 1303140019. The next prime is 1303140031. The reversal of 1303140021 is 1200413031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1303140021 - 2¹ = 1303140019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303140031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3681010 + ... + 3681363.

It is an arithmetic number, because the mean of its divisors is an integer number (220871220).

Almost surely, 2^1303140021 is an apocalyptic number.

It is an amenable number.

1303140021 is a deficient number, since it is larger than the sum of its proper divisors (463829739).

1303140021 is an equidigital number, since it uses as much as digits as its factorization.

1303140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362435.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1303140021 is about 36099.0307487611. The cubic root of 1303140021 is about 1092.2708935941.

Adding to 1303140021 its reverse (1200413031), we get a palindrome (2503553052).

The spelling of 1303140021 in words is "one billion, three hundred three million, one hundred forty thousand, twenty-one".