1421144403 has 24 divisors (see below), whose sum is σ = 2210619600. Its totient is φ = 809726400.

The previous prime is 1421144353. The next prime is 1421144441. The reversal of 1421144403 is 3044411241.

It is not a de Polignac number, because 1421144403 - 2⁶ = 1421144339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421142403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37453 + ... + 65153.

It is an arithmetic number, because the mean of its divisors is an integer number (92109150).

Almost surely, 2^1421144403 is an apocalyptic number.

1421144403 is a deficient number, since it is larger than the sum of its proper divisors (789475197).

1421144403 is a wasteful number, since it uses less digits than its factorization.

1421144403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28067 (or 28060 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1421144403 is about 37698.0689558497. The cubic root of 1421144403 is about 1124.2927315442.

Adding to 1421144403 its reverse (3044411241), we get a palindrome (4465555644).

The spelling of 1421144403 in words is "one billion, four hundred twenty-one million, one hundred forty-four thousand, four hundred three".