120724243 has 4 divisors (see below), whose sum is σ = 120833440. Its totient is φ = 120615048.

The previous prime is 120724231. The next prime is 120724277. The reversal of 120724243 is 342427021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342427021 = 15671 ⋅21851.

It is a cyclic number.

It is not a de Polignac number, because 120724243 - 2⁹ = 120723731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120724543) 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 3 ways as a sum of consecutive naturals, for example, 52923 + ... + 55156.

It is an arithmetic number, because the mean of its divisors is an integer number (30208360).

Almost surely, 2^120724243 is an apocalyptic number.

120724243 is a deficient number, since it is larger than the sum of its proper divisors (109197).

120724243 is a wasteful number, since it uses less digits than its factorization.

120724243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109196.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 120724243 is about 10987.4584413321. The cubic root of 120724243 is about 494.2327234806.

The spelling of 120724243 in words is "one hundred twenty million, seven hundred twenty-four thousand, two hundred forty-three".