42012235512 has 96 divisors (see below), whose sum is σ = 122741892000. Its totient is φ = 12905088768.

The previous prime is 42012235487. The next prime is 42012235513. The reversal of 42012235512 is 21553221024.

42012235512 is a `hidden beast` number, since 4 + 20 + 122 + 3 + 5 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012235513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523198 + ... + 598130.

It is an arithmetic number, because the mean of its divisors is an integer number (1278561375).

Almost surely, 2^42012235512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42012235512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61370946000).

42012235512 is an abundant number, since it is smaller than the sum of its proper divisors (80729656488).

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

42012235512 is a wasteful number, since it uses less digits than its factorization.

42012235512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75557 (or 75550 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 42012235512 its reverse (21553221024), we get a palindrome (63565456536).

The spelling of 42012235512 in words is "forty-two billion, twelve million, two hundred thirty-five thousand, five hundred twelve".