121942017 has 28 divisors (see below), whose sum is σ = 186771840. Its totient is φ = 79542648.

The previous prime is 121941997. The next prime is 121942027. The reversal of 121942017 is 710249121.

It is not a de Polignac number, because 121942017 - 2¹¹ = 121939969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121942027) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 32484 + ... + 36042.

Almost surely, 2^121942017 is an apocalyptic number.

It is an amenable number.

121942017 is a deficient number, since it is larger than the sum of its proper divisors (64829823).

121942017 is an frugal number, since it uses more digits than its factorization.

121942017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 121942017 is about 11042.7359381632. The cubic root of 121942017 is about 495.8889810167. Note that the first 3 decimals are identical.

The spelling of 121942017 in words is "one hundred twenty-one million, nine hundred forty-two thousand, seventeen".