499142081 has 2 divisors, whose sum is σ = 499142082. Its totient is φ = 499142080.

The previous prime is 499142057. The next prime is 499142107. The reversal of 499142081 is 180241994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272910400 + 226231681 = 16520^2 + 15041^2 .

It is a cyclic number.

It is not a de Polignac number, because 499142081 - 2¹⁰ = 499141057 is a prime.

It is a super-2 number, since 2×499142081² = 498285634050021122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (499142011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249571040 + 249571041.

It is an arithmetic number, because the mean of its divisors is an integer number (249571041).

Almost surely, 2^499142081 is an apocalyptic number.

It is an amenable number.

499142081 is a deficient number, since it is larger than the sum of its proper divisors (1).

499142081 is an equidigital number, since it uses as much as digits as its factorization.

499142081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 499142081 is about 22341.4878868888. The cubic root of 499142081 is about 793.2463122582.

The spelling of 499142081 in words is "four hundred ninety-nine million, one hundred forty-two thousand, eighty-one".