1420503 has 32 divisors (see below), whose sum is σ = 2405376. Its totient is φ = 726528.

The previous prime is 1420501. The next prime is 1420511. The reversal of 1420503 is 3050241.

It is not a de Polignac number, because 1420503 - 2¹ = 1420501 is a prime.

1420503 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8125 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (75168).

2^1420503 is an apocalyptic number.

1420503 is a deficient number, since it is larger than the sum of its proper divisors (984873).

1420503 is a wasteful number, since it uses less digits than its factorization.

1420503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1420503 is about 1191.8485642060. The cubic root of 1420503 is about 112.4123564300.

Adding to 1420503 its reverse (3050241), we get a palindrome (4470744).

The spelling of 1420503 in words is "one million, four hundred twenty thousand, five hundred three".