121670123 has 2 divisors, whose sum is σ = 121670124. Its totient is φ = 121670122.

The previous prime is 121670119. The next prime is 121670141. The reversal of 121670123 is 321076121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121670123 - 2² = 121670119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121670183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60835061 + 60835062.

It is an arithmetic number, because the mean of its divisors is an integer number (60835062).

Almost surely, 2^121670123 is an apocalyptic number.

121670123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121670123 is an equidigital number, since it uses as much as digits as its factorization.

121670123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 121670123 is about 11030.4180791120. The cubic root of 121670123 is about 495.5201456861.

The spelling of 121670123 in words is "one hundred twenty-one million, six hundred seventy thousand, one hundred twenty-three".