120642493 has 2 divisors, whose sum is σ = 120642494. Its totient is φ = 120642492.

The previous prime is 120642479. The next prime is 120642497. The reversal of 120642493 is 394246021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107371044 + 13271449 = 10362^2 + 3643^2 .

It is a cyclic number.

It is not a de Polignac number, because 120642493 - 2⁹ = 120641981 is a prime.

It is a super-2 number, since 2×120642493² = 29109222234510098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120642497) 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, 60321246 + 60321247.

It is an arithmetic number, because the mean of its divisors is an integer number (60321247).

Almost surely, 2^120642493 is an apocalyptic number.

It is an amenable number.

120642493 is a deficient number, since it is larger than the sum of its proper divisors (1).

120642493 is an equidigital number, since it uses as much as digits as its factorization.

120642493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 120642493 is about 10983.7376607419. The cubic root of 120642493 is about 494.1211395725.

The spelling of 120642493 in words is "one hundred twenty million, six hundred forty-two thousand, four hundred ninety-three".