494720123 has 2 divisors, whose sum is σ = 494720124. Its totient is φ = 494720122.

The previous prime is 494720113. The next prime is 494720129. The reversal of 494720123 is 321027494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494720123 - 2²⁶ = 427611259 is a prime.

It is a super-2 number, since 2×494720123² = 489496000202270258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 494720123.

It is not a weakly prime, because it can be changed into another prime (494720129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247360061 + 247360062.

It is an arithmetic number, because the mean of its divisors is an integer number (247360062).

Almost surely, 2^494720123 is an apocalyptic number.

494720123 is a deficient number, since it is larger than the sum of its proper divisors (1).

494720123 is an equidigital number, since it uses as much as digits as its factorization.

494720123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 494720123 is about 22242.3048041339. The cubic root of 494720123 is about 790.8968733076.

The spelling of 494720123 in words is "four hundred ninety-four million, seven hundred twenty thousand, one hundred twenty-three".