42012065040 has 160 divisors (see below), whose sum is σ = 143484780672. Its totient is φ = 10083840000.

The previous prime is 42012065021. The next prime is 42012065087. The reversal of 42012065040 is 4056021024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42012065040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187860 + ... + 345420.

Almost surely, 2^42012065040 is an apocalyptic number.

42012065040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42012065040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71742390336).

42012065040 is an abundant number, since it is smaller than the sum of its proper divisors (101472715632).

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

42012065040 is a wasteful number, since it uses less digits than its factorization.

42012065040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157689 (or 157683 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 42012065040 its reverse (4056021024), we get a palindrome (46068086064).

The spelling of 42012065040 in words is "forty-two billion, twelve million, sixty-five thousand, forty".