121376503 has 6 divisors (see below), whose sum is σ = 128101344. Its totient is φ = 114987924.

The previous prime is 121376491. The next prime is 121376527. The reversal of 121376503 is 305673121.

It is not a de Polignac number, because 121376503 - 2²⁵ = 87822071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121376303) 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 5 ways as a sum of consecutive naturals, for example, 167751 + ... + 168472.

It is an arithmetic number, because the mean of its divisors is an integer number (21350224).

Almost surely, 2^121376503 is an apocalyptic number.

121376503 is a deficient number, since it is larger than the sum of its proper divisors (6724841).

121376503 is an equidigital number, since it uses as much as digits as its factorization.

121376503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336261 (or 336242 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 121376503 is about 11017.1004806165. The cubic root of 121376503 is about 495.1212205245.

The spelling of 121376503 in words is "one hundred twenty-one million, three hundred seventy-six thousand, five hundred three".