1303272421 has 4 divisors (see below), whose sum is σ = 1421751744. Its totient is φ = 1184793100.

The previous prime is 1303272413. The next prime is 1303272461. The reversal of 1303272421 is 1242723031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1303272421 - 2³ = 1303272413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303272461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59239645 + ... + 59239666.

It is an arithmetic number, because the mean of its divisors is an integer number (355437936).

Almost surely, 2^1303272421 is an apocalyptic number.

1303272421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1303272421 is a deficient number, since it is larger than the sum of its proper divisors (118479323).

1303272421 is a wasteful number, since it uses less digits than its factorization.

1303272421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118479322.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1303272421 is about 36100.8645464343. The cubic root of 1303272421 is about 1092.3078841877.

Adding to 1303272421 its reverse (1242723031), we get a palindrome (2545995452).

The spelling of 1303272421 in words is "one billion, three hundred three million, two hundred seventy-two thousand, four hundred twenty-one".