42452455138 has 8 divisors (see below), whose sum is σ = 64309165020. Its totient is φ = 21016066800.

The previous prime is 42452455109. The next prime is 42452455139. The reversal of 42452455138 is 83155425424.

42452455138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42379574769 + 72880369 = 205863^2 + 8537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42452455094 and 42452455103.

It is not an unprimeable number, because it can be changed into a prime (42452455139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105080133 + ... + 105080536.

Almost surely, 2^42452455138 is an apocalyptic number.

42452455138 is a deficient number, since it is larger than the sum of its proper divisors (21856709882).

42452455138 is a wasteful number, since it uses less digits than its factorization.

42452455138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210160772.

The product of its digits is 768000, while the sum is 43.

The spelling of 42452455138 in words is "forty-two billion, four hundred fifty-two million, four hundred fifty-five thousand, one hundred thirty-eight".