42540044530 has 8 divisors (see below), whose sum is σ = 76572080172. Its totient is φ = 17016017808.

The previous prime is 42540044483. The next prime is 42540044539. The reversal of 42540044530 is 3544004524.

It can be written as a sum of positive squares in 2 ways, for example, as 39050897769 + 3489146761 = 197613^2 + 59069^2 .

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

It is a super-2 number, since 2×42540044530² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42540044492 and 42540044501.

It is not an unprimeable number, because it can be changed into a prime (42540044539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127002217 + ... + 2127002236.

Almost surely, 2^42540044530 is an apocalyptic number.

42540044530 is a deficient number, since it is larger than the sum of its proper divisors (34032035642).

42540044530 is a wasteful number, since it uses less digits than its factorization.

42540044530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254004460.

The product of its (nonzero) digits is 38400, while the sum is 31.

The spelling of 42540044530 in words is "forty-two billion, five hundred forty million, forty-four thousand, five hundred thirty".