121330042 has 8 divisors (see below), whose sum is σ = 183304800. Its totient is φ = 60228444.

The previous prime is 121330039. The next prime is 121330057. The reversal of 121330042 is 240033121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 121329998 and 121330025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217942 + ... + 218497.

It is an arithmetic number, because the mean of its divisors is an integer number (22913100).

Almost surely, 2^121330042 is an apocalyptic number.

121330042 is a deficient number, since it is larger than the sum of its proper divisors (61974758).

121330042 is a wasteful number, since it uses less digits than its factorization.

121330042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436580.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121330042 is about 11014.9916931426. The cubic root of 121330042 is about 495.0580376122.

Adding to 121330042 its reverse (240033121), we get a palindrome (361363163).

The spelling of 121330042 in words is "one hundred twenty-one million, three hundred thirty thousand, forty-two".