1142203503 has 8 divisors (see below), whose sum is σ = 1740500608. Its totient is φ = 652687704.

The previous prime is 1142203481. The next prime is 1142203507. The reversal of 1142203503 is 3053022411.

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

It is not a de Polignac number, because 1142203503 - 2⁸ = 1142203247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 54390643 = 1142203503 / (1 + 1 + 4 + 2 + 2 + 0 + 3 + 5 + 0 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 1142203503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142203507) 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 7 ways as a sum of consecutive naturals, for example, 27195301 + ... + 27195342.

It is an arithmetic number, because the mean of its divisors is an integer number (217562576).

Almost surely, 2^1142203503 is an apocalyptic number.

1142203503 is a deficient number, since it is larger than the sum of its proper divisors (598297105).

1142203503 is an equidigital number, since it uses as much as digits as its factorization.

1142203503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54390653.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1142203503 is about 33796.5013425946. The cubic root of 1142203503 is about 1045.3165567991.

Adding to 1142203503 its reverse (3053022411), we get a palindrome (4195225914).

The spelling of 1142203503 in words is "one billion, one hundred forty-two million, two hundred three thousand, five hundred three".