120372181 has 2 divisors, whose sum is σ = 120372182. Its totient is φ = 120372180.

The previous prime is 120372157. The next prime is 120372199. The reversal of 120372181 is 181273021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120253156 + 119025 = 10966^2 + 345^2 .

It is an emirp because it is prime and its reverse (181273021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120372181 - 2⁵ = 120372149 is a prime.

It is a super-2 number, since 2×120372181² = 28978923917393522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120372151) 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, 60186090 + 60186091.

It is an arithmetic number, because the mean of its divisors is an integer number (60186091).

Almost surely, 2^120372181 is an apocalyptic number.

It is an amenable number.

120372181 is a deficient number, since it is larger than the sum of its proper divisors (1).

120372181 is an equidigital number, since it uses as much as digits as its factorization.

120372181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 120372181 is about 10971.4256594118. The cubic root of 120372181 is about 493.7518204067.

The spelling of 120372181 in words is "one hundred twenty million, three hundred seventy-two thousand, one hundred eighty-one".