42042132520 has 16 divisors (see below), whose sum is σ = 94594798260. Its totient is φ = 16816852992.

The previous prime is 42042132497. The next prime is 42042132527. The reversal of 42042132520 is 2523124024.

It can be written as a sum of positive squares in 2 ways, for example, as 35143501156 + 6898631364 = 187466^2 + 83058^2 .

It is not an unprimeable number, because it can be changed into a prime (42042132527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525526617 + ... + 525526696.

Almost surely, 2^42042132520 is an apocalyptic number.

42042132520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42042132520 is an abundant number, since it is smaller than the sum of its proper divisors (52552665740).

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

42042132520 is a wasteful number, since it uses less digits than its factorization.

42042132520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051053324 (or 1051053320 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 42042132520 its reverse (2523124024), we get a palindrome (44565256544).

The spelling of 42042132520 in words is "forty-two billion, forty-two million, one hundred thirty-two thousand, five hundred twenty".