42455894869 has 4 divisors (see below), whose sum is σ = 42463295820. Its totient is φ = 42448493920.

The previous prime is 42455894867. The next prime is 42455894939. The reversal of 42455894869 is 96849855424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25245078769 + 17210816100 = 158887^2 + 131190^2 .

It is a cyclic number.

It is not a de Polignac number, because 42455894869 - 2¹ = 42455894867 is a prime.

It is a super-2 number, since 2×42455894869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42455894869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455894861) 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 in 3 ways as a sum of consecutive naturals, for example, 3691864 + ... + 3703345.

It is an arithmetic number, because the mean of its divisors is an integer number (10615823955).

Almost surely, 2^42455894869 is an apocalyptic number.

It is an amenable number.

42455894869 is a deficient number, since it is larger than the sum of its proper divisors (7400951).

42455894869 is an equidigital number, since it uses as much as digits as its factorization.

42455894869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400950.

The product of its digits is 99532800, while the sum is 64.

The spelling of 42455894869 in words is "forty-two billion, four hundred fifty-five million, eight hundred ninety-four thousand, eight hundred sixty-nine".