1420001603 has 2 divisors, whose sum is σ = 1420001604. Its totient is φ = 1420001602.

The previous prime is 1420001591. The next prime is 1420001657. The reversal of 1420001603 is 3061000241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420001603 - 2²² = 1415807299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420001663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710000801 + 710000802.

It is an arithmetic number, because the mean of its divisors is an integer number (710000802).

Almost surely, 2^1420001603 is an apocalyptic number.

1420001603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420001603 is an equidigital number, since it uses as much as digits as its factorization.

1420001603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1420001603 is about 37682.9086324291. The cubic root of 1420001603 is about 1123.9912875618.

Adding to 1420001603 its reverse (3061000241), we get a palindrome (4481001844).

The spelling of 1420001603 in words is "one billion, four hundred twenty million, one thousand, six hundred three".