1288503 has 12 divisors (see below), whose sum is σ = 1892488. Its totient is φ = 844560.

The previous prime is 1288487. The next prime is 1288513. The reversal of 1288503 is 3058821.

It is a happy number.

It is not a de Polignac number, because 1288503 - 2⁴ = 1288487 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288513) 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, 625 + ... + 1722.

2^1288503 is an apocalyptic number.

1288503 is a deficient number, since it is larger than the sum of its proper divisors (603985).

1288503 is a wasteful number, since it uses less digits than its factorization.

1288503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414 (or 2411 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1288503 is about 1135.1224603539. The cubic root of 1288503 is about 108.8165981291.

The spelling of 1288503 in words is "one million, two hundred eighty-eight thousand, five hundred three".