42936667447 has 4 divisors (see below), whose sum is σ = 43353528400. Its totient is φ = 42519806496.

The previous prime is 42936667439. The next prime is 42936667481. The reversal of 42936667447 is 74476663924.

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

It is a cyclic number.

It is not a de Polignac number, because 42936667447 - 2³ = 42936667439 is a prime.

It is a super-2 number, since 2×42936667447² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42936667391 and 42936667400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42936667247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208430322 + ... + 208430527.

It is an arithmetic number, because the mean of its divisors is an integer number (10838382100).

Almost surely, 2^42936667447 is an apocalyptic number.

42936667447 is a deficient number, since it is larger than the sum of its proper divisors (416860953).

42936667447 is a wasteful number, since it uses less digits than its factorization.

42936667447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416860952.

The product of its digits is 36578304, while the sum is 58.

The spelling of 42936667447 in words is "forty-two billion, nine hundred thirty-six million, six hundred sixty-seven thousand, four hundred forty-seven".