120158609 has 2 divisors, whose sum is σ = 120158610. Its totient is φ = 120158608.

The previous prime is 120158543. The next prime is 120158611. The reversal of 120158609 is 906851021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 53246209 = 8180^2 + 7297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120158609 is a prime.

Together with 120158611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120158639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60079304 + 60079305.

It is an arithmetic number, because the mean of its divisors is an integer number (60079305).

Almost surely, 2^120158609 is an apocalyptic number.

It is an amenable number.

120158609 is a deficient number, since it is larger than the sum of its proper divisors (1).

120158609 is an equidigital number, since it uses as much as digits as its factorization.

120158609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 120158609 is about 10961.6882367635. The cubic root of 120158609 is about 493.4596322096.

The spelling of 120158609 in words is "one hundred twenty million, one hundred fifty-eight thousand, six hundred nine".