1421220303 has 16 divisors (see below), whose sum is σ = 2109926400. Its totient is φ = 945493560.

The previous prime is 1421220299. The next prime is 1421220377. The reversal of 1421220303 is 3030221241.

1421220303 is a `hidden beast` number, since 142 + 1 + 220 + 303 = 666.

It is not a de Polignac number, because 1421220303 - 2² = 1421220299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421220803) 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 15 ways as a sum of consecutive naturals, for example, 42013 + ... + 67878.

It is an arithmetic number, because the mean of its divisors is an integer number (131870400).

Almost surely, 2^1421220303 is an apocalyptic number.

1421220303 is a deficient number, since it is larger than the sum of its proper divisors (688706097).

1421220303 is a wasteful number, since it uses less digits than its factorization.

1421220303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110379 (or 110373 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1421220303 is about 37699.0756252723. The cubic root of 1421220303 is about 1124.3127464700.

Adding to 1421220303 its reverse (3030221241), we get a palindrome (4451441544).

The spelling of 1421220303 in words is "one billion, four hundred twenty-one million, two hundred twenty thousand, three hundred three".