1420003 has 8 divisors (see below), whose sum is σ = 1610000. Its totient is φ = 1241568.

The previous prime is 1419973. The next prime is 1420009. The reversal of 1420003 is 3000241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420003 is a prime.

It is a Duffinian number.

1420003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1420009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2628 + ... + 3121.

It is an arithmetic number, because the mean of its divisors is an integer number (201250).

2^1420003 is an apocalyptic number.

1420003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1420003 is a deficient number, since it is larger than the sum of its proper divisors (189997).

1420003 is a wasteful number, since it uses less digits than its factorization.

1420003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1420003 is about 1191.6387875527. The cubic root of 1420003 is about 112.3991656157.

Adding to 1420003 its reverse (3000241), we get a palindrome (4420244).

The spelling of 1420003 in words is "one million, four hundred twenty thousand, three".