121240003 has 2 divisors, whose sum is σ = 121240004. Its totient is φ = 121240002.

The previous prime is 121239997. The next prime is 121240027. The reversal of 121240003 is 300042121.

It is a weak prime.

It is an emirp because it is prime and its reverse (300042121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121240003 - 2¹⁷ = 121108931 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (121244003) 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 as a sum of consecutive naturals, namely, 60620001 + 60620002.

It is an arithmetic number, because the mean of its divisors is an integer number (60620002).

Almost surely, 2^121240003 is an apocalyptic number.

121240003 is a deficient number, since it is larger than the sum of its proper divisors (1).

121240003 is an equidigital number, since it uses as much as digits as its factorization.

121240003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121240003 is about 11010.9038230292. The cubic root of 121240003 is about 494.9355464833.

Adding to 121240003 its reverse (300042121), we get a palindrome (421282124).

The spelling of 121240003 in words is "one hundred twenty-one million, two hundred forty thousand, three".