1420001003 has 2 divisors, whose sum is σ = 1420001004. Its totient is φ = 1420001002.

The previous prime is 1420000999. The next prime is 1420001047. The reversal of 1420001003 is 3001000241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420001003 - 2² = 1420000999 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420001603) 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 as a sum of consecutive naturals, namely, 710000501 + 710000502.

It is an arithmetic number, because the mean of its divisors is an integer number (710000502).

Almost surely, 2^1420001003 is an apocalyptic number.

1420001003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420001003 is an equidigital number, since it uses as much as digits as its factorization.

1420001003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1420001003 is about 37682.9006712594. The cubic root of 1420001003 is about 1123.9911292533.

Adding to 1420001003 its reverse (3001000241), we get a palindrome (4421001244).

The spelling of 1420001003 in words is "one billion, four hundred twenty million, one thousand, three".