120724751 has 4 divisors (see below), whose sum is σ = 137971152. Its totient is φ = 103478352.

The previous prime is 120724741. The next prime is 120724771. The reversal of 120724751 is 157427021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120724751 - 2¹⁰ = 120723727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120724711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8623190 + ... + 8623203.

It is an arithmetic number, because the mean of its divisors is an integer number (34492788).

Almost surely, 2^120724751 is an apocalyptic number.

120724751 is a deficient number, since it is larger than the sum of its proper divisors (17246401).

120724751 is an equidigital number, since it uses as much as digits as its factorization.

120724751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17246400.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 120724751 is about 10987.4815585738. The cubic root of 120724751 is about 494.2334167130.

The spelling of 120724751 in words is "one hundred twenty million, seven hundred twenty-four thousand, seven hundred fifty-one".