42444000457 has 2 divisors, whose sum is σ = 42444000458. Its totient is φ = 42444000456.

The previous prime is 42444000451. The next prime is 42444000481. The reversal of 42444000457 is 75400044424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36840579721 + 5603420736 = 191939^2 + 74856^2 .

It is a cyclic number.

It is not a de Polignac number, because 42444000457 - 2²⁷ = 42309782729 is a prime.

It is not a weakly prime, because it can be changed into another prime (42444000451) 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, 21222000228 + 21222000229.

It is an arithmetic number, because the mean of its divisors is an integer number (21222000229).

Almost surely, 2^42444000457 is an apocalyptic number.

It is an amenable number.

42444000457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444000457 is an equidigital number, since it uses as much as digits as its factorization.

42444000457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71680, while the sum is 34.

The spelling of 42444000457 in words is "forty-two billion, four hundred forty-four million, four hundred fifty-seven", and thus it is an aban number.