42043556412 has 240 divisors, whose sum is σ = 129828593664. Its totient is φ = 11696400000.

The previous prime is 42043556411. The next prime is 42043556413. The reversal of 42043556412 is 21465534024.

42043556412 is a `hidden beast` number, since 4 + 2 + 0 + 4 + 3 + 5 + 5 + 641 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (42043556411) and next prime (42043556413).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043556411) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8847037 + ... + 8851787.

Almost surely, 2^42043556412 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 42043556412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64914296832).

42043556412 is an abundant number, since it is smaller than the sum of its proper divisors (87785037252).

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

42043556412 is a wasteful number, since it uses less digits than its factorization.

42043556412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982 (or 4971 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 42043556412 in words is "forty-two billion, forty-three million, five hundred fifty-six thousand, four hundred twelve".