154120289 has 2 divisors, whose sum is σ = 154120290. Its totient is φ = 154120288.

The previous prime is 154120279. The next prime is 154120303. The reversal of 154120289 is 982021451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149035264 + 5085025 = 12208^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 154120289 - 2⁴ = 154120273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154120259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77060144 + 77060145.

It is an arithmetic number, because the mean of its divisors is an integer number (77060145).

Almost surely, 2^154120289 is an apocalyptic number.

It is an amenable number.

154120289 is a deficient number, since it is larger than the sum of its proper divisors (1).

154120289 is an equidigital number, since it uses as much as digits as its factorization.

154120289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 154120289 is about 12414.5192818731. The cubic root of 154120289 is about 536.1503636678.

The spelling of 154120289 in words is "one hundred fifty-four million, one hundred twenty thousand, two hundred eighty-nine".