121601242 has 24 divisors (see below), whose sum is σ = 215788320. Its totient is φ = 51229080.

The previous prime is 121601213. The next prime is 121601257. The reversal of 121601242 is 242106121.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 4734 + ... + 16297.

It is an arithmetic number, because the mean of its divisors is an integer number (8991180).

Almost surely, 2^121601242 is an apocalyptic number.

121601242 is a deficient number, since it is larger than the sum of its proper divisors (94187078).

121601242 is a wasteful number, since it uses less digits than its factorization.

121601242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21106 (or 21099 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 121601242 is about 11027.2953166223. The cubic root of 121601242 is about 495.4266185727.

Adding to 121601242 its reverse (242106121), we get a palindrome (363707363).

The spelling of 121601242 in words is "one hundred twenty-one million, six hundred one thousand, two hundred forty-two".