42135044520 has 64 divisors (see below), whose sum is σ = 128790155520. Its totient is φ = 11024009984.

The previous prime is 42135044503. The next prime is 42135044521. The reversal of 42135044520 is 2544053124.

42135044520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42135044521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3306144 + ... + 3318863.

It is an arithmetic number, because the mean of its divisors is an integer number (2012346180).

Almost surely, 2^42135044520 is an apocalyptic number.

42135044520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42135044520 is an abundant number, since it is smaller than the sum of its proper divisors (86655111000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42135044520 is a wasteful number, since it uses less digits than its factorization.

42135044520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625074 (or 6625070 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 42135044520 its reverse (2544053124), we get a palindrome (44679097644).

The spelling of 42135044520 in words is "forty-two billion, one hundred thirty-five million, forty-four thousand, five hundred twenty".