121303423 has 2 divisors, whose sum is σ = 121303424. Its totient is φ = 121303422.

The previous prime is 121303411. The next prime is 121303451. The reversal of 121303423 is 324303121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121303423 - 2²¹ = 119206271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121303423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121303453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651711 + 60651712.

It is an arithmetic number, because the mean of its divisors is an integer number (60651712).

Almost surely, 2^121303423 is an apocalyptic number.

121303423 is a deficient number, since it is larger than the sum of its proper divisors (1).

121303423 is an equidigital number, since it uses as much as digits as its factorization.

121303423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 121303423 is about 11013.7833190961. The cubic root of 121303423 is about 495.0218308231.

Adding to 121303423 its reverse (324303121), we get a palindrome (445606544).

The spelling of 121303423 in words is "one hundred twenty-one million, three hundred three thousand, four hundred twenty-three".