120199549 has 2 divisors, whose sum is σ = 120199550. Its totient is φ = 120199548.

The previous prime is 120199523. The next prime is 120199559. The reversal of 120199549 is 945991021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81324324 + 38875225 = 9018^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 120199549 - 2¹¹ = 120197501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120199559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60099774 + 60099775.

It is an arithmetic number, because the mean of its divisors is an integer number (60099775).

Almost surely, 2^120199549 is an apocalyptic number.

It is an amenable number.

120199549 is a deficient number, since it is larger than the sum of its proper divisors (1).

120199549 is an equidigital number, since it uses as much as digits as its factorization.

120199549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 120199549 is about 10963.5554908068. Note that the first 3 decimals coincide. The cubic root of 120199549 is about 493.5156690971.

The spelling of 120199549 in words is "one hundred twenty million, one hundred ninety-nine thousand, five hundred forty-nine".