1121052403 has 8 divisors (see below), whose sum is σ = 1187358480. Its totient is φ = 1054786560.

The previous prime is 1121052379. The next prime is 1121052419. The reversal of 1121052403 is 3042501211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121052403 - 2²¹ = 1118955251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121052433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62208 + ... + 78178.

It is an arithmetic number, because the mean of its divisors is an integer number (148419810).

Almost surely, 2^1121052403 is an apocalyptic number.

1121052403 is a deficient number, since it is larger than the sum of its proper divisors (66306077).

1121052403 is a wasteful number, since it uses less digits than its factorization.

1121052403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20117.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1121052403 is about 33482.1206466974. The cubic root of 1121052403 is about 1038.8239921362.

Adding to 1121052403 its reverse (3042501211), we get a palindrome (4163553614).

The spelling of 1121052403 in words is "one billion, one hundred twenty-one million, fifty-two thousand, four hundred three".