42001269912 has 192 divisors, whose sum is σ = 137803161600. Its totient is φ = 11281996800.

The previous prime is 42001269889. The next prime is 42001269941. The reversal of 42001269912 is 21996210024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9859639 + ... + 9863897.

It is an arithmetic number, because the mean of its divisors is an integer number (717724800).

Almost surely, 2^42001269912 is an apocalyptic number.

42001269912 is a gapful number since it is divisible by the number (42) 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 42001269912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68901580800).

42001269912 is an abundant number, since it is smaller than the sum of its proper divisors (95801891688).

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

42001269912 is a wasteful number, since it uses less digits than its factorization.

42001269912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5446 (or 5439 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

Adding to 42001269912 its reverse (21996210024), we get a palindrome (63997479936).

The spelling of 42001269912 in words is "forty-two billion, one million, two hundred sixty-nine thousand, nine hundred twelve".