121670345 has 16 divisors (see below), whose sum is σ = 152841600. Its totient is φ = 92805504.

The previous prime is 121670327. The next prime is 121670369. The reversal of 121670345 is 543076121.

It is a cyclic number.

It is not a de Polignac number, because 121670345 - 2¹⁰ = 121669321 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38381 + ... + 41429.

It is an arithmetic number, because the mean of its divisors is an integer number (9552600).

Almost surely, 2^121670345 is an apocalyptic number.

It is an amenable number.

121670345 is a deficient number, since it is larger than the sum of its proper divisors (31171255).

121670345 is a wasteful number, since it uses less digits than its factorization.

121670345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 121670345 is about 11030.4281421892. The cubic root of 121670345 is about 495.5204470623.

The spelling of 121670345 in words is "one hundred twenty-one million, six hundred seventy thousand, three hundred forty-five".