120323521 has 2 divisors, whose sum is σ = 120323522. Its totient is φ = 120323520.

The previous prime is 120323513. The next prime is 120323531. The reversal of 120323521 is 125323021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 47886400 = 8511^2 + 6920^2 .

It is a cyclic number.

It is not a de Polignac number, because 120323521 - 2³ = 120323513 is a prime.

It is a super-4 number, since 4×120323521⁴ (a number of 33 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (120323531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60161760 + 60161761.

It is an arithmetic number, because the mean of its divisors is an integer number (60161761).

Almost surely, 2^120323521 is an apocalyptic number.

It is an amenable number.

120323521 is a deficient number, since it is larger than the sum of its proper divisors (1).

120323521 is an equidigital number, since it uses as much as digits as its factorization.

120323521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 120323521 is about 10969.2078565410. The cubic root of 120323521 is about 493.6852790027.

Adding to 120323521 its reverse (125323021), we get a palindrome (245646542).

The spelling of 120323521 in words is "one hundred twenty million, three hundred twenty-three thousand, five hundred twenty-one".