120448561249 has 3 divisors (see below), whose sum is σ = 120448908307. Its totient is φ = 120448214192.

The previous prime is 120448561231. The next prime is 120448561273. The reversal of 120448561249 is 942165844021.

The square root of 120448561249 is 347057.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 942165844021 = 347 ⋅2715175343.

It can be written as a sum of positive squares in only one way, i.e., 156125025 + 120292436224 = 12495^2 + 346832^2 .

It is not a de Polignac number, because 120448561249 - 2⁵ = 120448561217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120448561199 and 120448561208.

It is not an unprimeable number, because it can be changed into a prime (120448567249) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 173529 + ... + 520585.

Almost surely, 2^120448561249 is an apocalyptic number.

120448561249 is the 347057-th square number.

120448561249 is the 173529-th centered octagonal number.

It is an amenable number.

120448561249 is a deficient number, since it is larger than the sum of its proper divisors (347058).

120448561249 is an frugal number, since it uses more digits than its factorization.

120448561249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694114 (or 347057 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 120448561249 in words is "one hundred twenty billion, four hundred forty-eight million, five hundred sixty-one thousand, two hundred forty-nine".