120012491 has 2 divisors, whose sum is σ = 120012492. Its totient is φ = 120012490.

The previous prime is 120012449. The next prime is 120012517. The reversal of 120012491 is 194210021.

It is a strong prime.

It is an emirp because it is prime and its reverse (194210021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120012491 is a prime.

It is not a weakly prime, because it can be changed into another prime (120012421) 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, 60006245 + 60006246.

It is an arithmetic number, because the mean of its divisors is an integer number (60006246).

Almost surely, 2^120012491 is an apocalyptic number.

120012491 is a deficient number, since it is larger than the sum of its proper divisors (1).

120012491 is an equidigital number, since it uses as much as digits as its factorization.

120012491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 120012491 is about 10955.0212688064. The cubic root of 120012491 is about 493.2595284140.

The spelling of 120012491 in words is "one hundred twenty million, twelve thousand, four hundred ninety-one".