42861744 has 80 divisors (see below), whose sum is σ = 125706240. Its totient is φ = 13976640.

The previous prime is 42861733. The next prime is 42861751. The reversal of 42861744 is 44716824.

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

It is a junction number, because it is equal to n+sod(n) for n = 42861699 and 42861708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19249 + ... + 21359.

It is an arithmetic number, because the mean of its divisors is an integer number (1571328).

Almost surely, 2^42861744 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 42861744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62853120).

42861744 is an abundant number, since it is smaller than the sum of its proper divisors (82844496).

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

42861744 is a wasteful number, since it uses less digits than its factorization.

42861744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175 (or 2163 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 42861744 is about 6546.8881157387. Note that the first 3 decimals coincide. The cubic root of 42861744 is about 349.9639255336.

The spelling of 42861744 in words is "forty-two million, eight hundred sixty-one thousand, seven hundred forty-four".