1421152303 has 4 divisors (see below), whose sum is σ = 1421287120. Its totient is φ = 1421017488.

The previous prime is 1421152217. The next prime is 1421152333. The reversal of 1421152303 is 3032511241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421152303 - 2⁹ = 1421151791 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 (1421152333) 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, 50118 + ... + 73171.

It is an arithmetic number, because the mean of its divisors is an integer number (355321780).

Almost surely, 2^1421152303 is an apocalyptic number.

1421152303 is a deficient number, since it is larger than the sum of its proper divisors (134817).

1421152303 is a wasteful number, since it uses less digits than its factorization.

1421152303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134816.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1421152303 is about 37698.1737356069. The cubic root of 1421152303 is about 1124.2948148174.

Adding to 1421152303 its reverse (3032511241), we get a palindrome (4453663544).

The spelling of 1421152303 in words is "one billion, four hundred twenty-one million, one hundred fifty-two thousand, three hundred three".