121042072 has 16 divisors (see below), whose sum is σ = 227948400. Its totient is φ = 60255840.

The previous prime is 121042043. The next prime is 121042081. The reversal of 121042072 is 270240121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31204 + ... + 34867.

It is an arithmetic number, because the mean of its divisors is an integer number (14246775).

Almost surely, 2^121042072 is an apocalyptic number.

It is an amenable number.

121042072 is a deficient number, since it is larger than the sum of its proper divisors (106906328).

121042072 is a wasteful number, since it uses less digits than its factorization.

121042072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66306 (or 66302 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 121042072 is about 11001.9121974319. The cubic root of 121042072 is about 494.6660632443. Note that the first 3 decimals are identical.

Adding to 121042072 its reverse (270240121), we get a palindrome (391282193).

The spelling of 121042072 in words is "one hundred twenty-one million, forty-two thousand, seventy-two".