120989137 has 2 divisors, whose sum is σ = 120989138. Its totient is φ = 120989136.

The previous prime is 120989123. The next prime is 120989147. The reversal of 120989137 is 731989021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83338641 + 37650496 = 9129^2 + 6136^2 .

It is an emirp because it is prime and its reverse (731989021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120989137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120989137.

It is not a weakly prime, because it can be changed into another prime (120989147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60494568 + 60494569.

It is an arithmetic number, because the mean of its divisors is an integer number (60494569).

Almost surely, 2^120989137 is an apocalyptic number.

It is an amenable number.

120989137 is a deficient number, since it is larger than the sum of its proper divisors (1).

120989137 is an equidigital number, since it uses as much as digits as its factorization.

120989137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 120989137 is about 10999.5062161899. The cubic root of 120989137 is about 494.5939424087.

The spelling of 120989137 in words is "one hundred twenty million, nine hundred eighty-nine thousand, one hundred thirty-seven".