1442403 has 12 divisors (see below), whose sum is σ = 2100280. Its totient is φ = 953856.

The previous prime is 1442393. The next prime is 1442411. The reversal of 1442403 is 3042441.

It is a de Polignac number, because none of the positive numbers 2^k-1442403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675 + ... + 1827.

2^1442403 is an apocalyptic number.

1442403 is a deficient number, since it is larger than the sum of its proper divisors (657877).

1442403 is a wasteful number, since it uses less digits than its factorization.

1442403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1442403 is about 1201.0008326392. Note that the first 3 decimals coincide. The cubic root of 1442403 is about 112.9871027126.

Adding to 1442403 its reverse (3042441), we get a palindrome (4484844).

The spelling of 1442403 in words is "one million, four hundred forty-two thousand, four hundred three".