120457993 has 2 divisors, whose sum is σ = 120457994. Its totient is φ = 120457992.

The previous prime is 120457991. The next prime is 120458011. The reversal of 120457993 is 399754021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117679104 + 2778889 = 10848^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 120457993 - 2¹ = 120457991 is a prime.

Together with 120457991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120457991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60228996 + 60228997.

It is an arithmetic number, because the mean of its divisors is an integer number (60228997).

Almost surely, 2^120457993 is an apocalyptic number.

It is an amenable number.

120457993 is a deficient number, since it is larger than the sum of its proper divisors (1).

120457993 is an equidigital number, since it uses as much as digits as its factorization.

120457993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 120457993 is about 10975.3356668486. The cubic root of 120457993 is about 493.8691226120.

The spelling of 120457993 in words is "one hundred twenty million, four hundred fifty-seven thousand, nine hundred ninety-three".