1421303003 has 4 divisors (see below), whose sum is σ = 1504909080. Its totient is φ = 1337696928.

The previous prime is 1421302991. The next prime is 1421303011. The reversal of 1421303003 is 3003031241.

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 1421303003 - 2⁸ = 1421302747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 83606059 = 1421303003 / (1 + 4 + 2 + 1 + 3 + 0 + 3 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421303083) 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, 41803013 + ... + 41803046.

It is an arithmetic number, because the mean of its divisors is an integer number (376227270).

Almost surely, 2^1421303003 is an apocalyptic number.

1421303003 is a deficient number, since it is larger than the sum of its proper divisors (83606077).

1421303003 is an equidigital number, since it uses as much as digits as its factorization.

1421303003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83606076.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1421303003 is about 37700.1724531865. The cubic root of 1421303003 is about 1124.3345537532.

Adding to 1421303003 its reverse (3003031241), we get a palindrome (4424334244).

The spelling of 1421303003 in words is "one billion, four hundred twenty-one million, three hundred three thousand, three".