120406252289 has 2 divisors, whose sum is σ = 120406252290. Its totient is φ = 120406252288.

The previous prime is 120406252279. The next prime is 120406252319. The reversal of 120406252289 is 982252604021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108762763264 + 11643489025 = 329792^2 + 107905^2 .

It is a cyclic number.

It is not a de Polignac number, because 120406252289 - 2⁸ = 120406252033 is a prime.

It is not a weakly prime, because it can be changed into another prime (120406252279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60203126144 + 60203126145.

It is an arithmetic number, because the mean of its divisors is an integer number (60203126145).

Almost surely, 2^120406252289 is an apocalyptic number.

It is an amenable number.

120406252289 is a deficient number, since it is larger than the sum of its proper divisors (1).

120406252289 is an equidigital number, since it uses as much as digits as its factorization.

120406252289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 120406252289 in words is "one hundred twenty billion, four hundred six million, two hundred fifty-two thousand, two hundred eighty-nine".