1142511503 has 12 divisors (see below), whose sum is σ = 1387055472. Its totient is φ = 921688320.

The previous prime is 1142511449. The next prime is 1142511511. The reversal of 1142511503 is 3051152411.

It is not a de Polignac number, because 1142511503 - 2¹⁸ = 1142249359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142511523) 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, 280358 + ... + 284403.

It is an arithmetic number, because the mean of its divisors is an integer number (115587956).

Almost surely, 2^1142511503 is an apocalyptic number.

1142511503 is a deficient number, since it is larger than the sum of its proper divisors (244543969).

1142511503 is an equidigital number, since it uses as much as digits as its factorization.

1142511503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564802 (or 564785 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1142511503 is about 33801.0577201365. The cubic root of 1142511503 is about 1045.4105063635.

Adding to 1142511503 its reverse (3051152411), we get a palindrome (4193663914).

The spelling of 1142511503 in words is "one billion, one hundred forty-two million, five hundred eleven thousand, five hundred three".