120972913 has 2 divisors, whose sum is σ = 120972914. Its totient is φ = 120972912.

The previous prime is 120972911. The next prime is 120972931. The reversal of 120972913 is 319279021.

It is a happy number.

Together with next prime (120972931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63091249 + 57881664 = 7943^2 + 7608^2 .

It is a cyclic number.

It is not a de Polignac number, because 120972913 - 2¹ = 120972911 is a prime.

Together with 120972911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120972911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60486456 + 60486457.

It is an arithmetic number, because the mean of its divisors is an integer number (60486457).

Almost surely, 2^120972913 is an apocalyptic number.

It is an amenable number.

120972913 is a deficient number, since it is larger than the sum of its proper divisors (1).

120972913 is an equidigital number, since it uses as much as digits as its factorization.

120972913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 120972913 is about 10998.7687038141. The cubic root of 120972913 is about 494.5718339477.

The spelling of 120972913 in words is "one hundred twenty million, nine hundred seventy-two thousand, nine hundred thirteen".