121306073 has 8 divisors (see below), whose sum is σ = 139075392. Its totient is φ = 103646736.

The previous prime is 121306063. The next prime is 121306079. The reversal of 121306073 is 370603121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121306073 - 2¹⁸ = 121043929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121306079) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25115 + ... + 29552.

It is an arithmetic number, because the mean of its divisors is an integer number (17384424).

Almost surely, 2^121306073 is an apocalyptic number.

It is an amenable number.

121306073 is a deficient number, since it is larger than the sum of its proper divisors (17769319).

121306073 is an equidigital number, since it uses as much as digits as its factorization.

121306073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54991.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 121306073 is about 11013.9036222404. The cubic root of 121306073 is about 495.0254355532.

Adding to 121306073 its reverse (370603121), we get a palindrome (491909194).

The spelling of 121306073 in words is "one hundred twenty-one million, three hundred six thousand, seventy-three".