121140503 has 16 divisors (see below), whose sum is σ = 136029696. Its totient is φ = 106928640.

The previous prime is 121140499. The next prime is 121140533. The reversal of 121140503 is 305041121.

It is a cyclic number.

It is not a de Polignac number, because 121140503 - 2² = 121140499 is a prime.

It is a super-3 number, since 3×121140503³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121140533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90626 + ... + 91952.

It is an arithmetic number, because the mean of its divisors is an integer number (8501856).

Almost surely, 2^121140503 is an apocalyptic number.

121140503 is a deficient number, since it is larger than the sum of its proper divisors (14889193).

121140503 is a wasteful number, since it uses less digits than its factorization.

121140503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121140503 is about 11006.3846471037. The cubic root of 121140503 is about 494.8001138327.

Adding to 121140503 its reverse (305041121), we get a palindrome (426181624).

It can be divided in two parts, 1211 and 40503, that added together give a palindrome (41714).

The spelling of 121140503 in words is "one hundred twenty-one million, one hundred forty thousand, five hundred three".