120724121 has 16 divisors (see below), whose sum is σ = 139728000. Its totient is φ = 102169728.

The previous prime is 120724103. The next prime is 120724147. The reversal of 120724121 is 121427021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120724121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120724093 and 120724102.

It is not an unprimeable number, because it can be changed into a prime (120724321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294965 + ... + 295373.

It is an arithmetic number, because the mean of its divisors is an integer number (8733000).

Almost surely, 2^120724121 is an apocalyptic number.

It is an amenable number.

120724121 is a deficient number, since it is larger than the sum of its proper divisors (19003879).

120724121 is a wasteful number, since it uses less digits than its factorization.

120724121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 120724121 is about 10987.4528895463. The cubic root of 120724121 is about 494.2325569954.

The spelling of 120724121 in words is "one hundred twenty million, seven hundred twenty-four thousand, one hundred twenty-one".