1421444303 has 4 divisors (see below), whose sum is σ = 1422800400. Its totient is φ = 1420088208.

The previous prime is 1421444287. The next prime is 1421444351. The reversal of 1421444303 is 3034441241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3034441241 = 13 ⋅233418557.

It is a cyclic number.

It is not a de Polignac number, because 1421444303 - 2⁴ = 1421444287 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 (1421444363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676475 + ... + 678572.

It is an arithmetic number, because the mean of its divisors is an integer number (355700100).

Almost surely, 2^1421444303 is an apocalyptic number.

1421444303 is a deficient number, since it is larger than the sum of its proper divisors (1356097).

1421444303 is a wasteful number, since it uses less digits than its factorization.

1421444303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356096.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1421444303 is about 37702.0464033453. The cubic root of 1421444303 is about 1124.3718113981.

Adding to 1421444303 its reverse (3034441241), we get a palindrome (4455885544).

The spelling of 1421444303 in words is "one billion, four hundred twenty-one million, four hundred forty-four thousand, three hundred three".