42423113878 has 4 divisors (see below), whose sum is σ = 63634670820. Its totient is φ = 21211556938.

The previous prime is 42423113851. The next prime is 42423113891. The reversal of 42423113878 is 87831132424.

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

It is a super-2 number, since 2×42423113878² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 10605778468 + ... + 10605778471.

It is an arithmetic number, because the mean of its divisors is an integer number (15908667705).

Almost surely, 2^42423113878 is an apocalyptic number.

42423113878 is a deficient number, since it is larger than the sum of its proper divisors (21211556942).

42423113878 is a wasteful number, since it uses less digits than its factorization.

42423113878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21211556941.

The product of its digits is 258048, while the sum is 43.

The spelling of 42423113878 in words is "forty-two billion, four hundred twenty-three million, one hundred thirteen thousand, eight hundred seventy-eight".