42555145138 has 8 divisors (see below), whose sum is σ = 69635692080. Its totient is φ = 19343247780.

The previous prime is 42555145133. The next prime is 42555145223. The reversal of 42555145138 is 83154155524.

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 = 42555145094 and 42555145103.

It is not an unprimeable number, because it can be changed into a prime (42555145133) 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, 967162368 + ... + 967162411.

It is an arithmetic number, because the mean of its divisors is an integer number (8704461510).

Almost surely, 2^42555145138 is an apocalyptic number.

42555145138 is a deficient number, since it is larger than the sum of its proper divisors (27080546942).

42555145138 is a wasteful number, since it uses less digits than its factorization.

42555145138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934324792.

The product of its digits is 480000, while the sum is 43.

The spelling of 42555145138 in words is "forty-two billion, five hundred fifty-five million, one hundred forty-five thousand, one hundred thirty-eight".