42044688 has 120 divisors (see below), whose sum is σ = 137187648. Its totient is φ = 11771136.

The previous prime is 42044659. The next prime is 42044699. The reversal of 42044688 is 88644024.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53031 + ... + 53817.

Almost surely, 2^42044688 is an apocalyptic number.

42044688 is a gapful number since it is divisible by the number (48) 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 42044688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68593824).

42044688 is an abundant number, since it is smaller than the sum of its proper divisors (95142960).

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

42044688 is a wasteful number, since it uses less digits than its factorization.

42044688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 42044688 is about 6484.1875358444. The cubic root of 42044688 is about 347.7259038684.

The spelling of 42044688 in words is "forty-two million, forty-four thousand, six hundred eighty-eight".