120172277 has 2 divisors, whose sum is σ = 120172278. Its totient is φ = 120172276.

The previous prime is 120172249. The next prime is 120172291. The reversal of 120172277 is 772271021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82337476 + 37834801 = 9074^2 + 6151^2 .

It is an emirp because it is prime and its reverse (772271021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120172277 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 (120172237) 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, 60086138 + 60086139.

It is an arithmetic number, because the mean of its divisors is an integer number (60086139).

Almost surely, 2^120172277 is an apocalyptic number.

It is an amenable number.

120172277 is a deficient number, since it is larger than the sum of its proper divisors (1).

120172277 is an equidigital number, since it uses as much as digits as its factorization.

120172277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 120172277 is about 10962.3116631484. The cubic root of 120172277 is about 493.4783417874.

The spelling of 120172277 in words is "one hundred twenty million, one hundred seventy-two thousand, two hundred seventy-seven".