42861936 has 80 divisors (see below), whose sum is σ = 120304800. Its totient is φ = 13071360.

The previous prime is 42861911. The next prime is 42861941. The reversal of 42861936 is 63916824.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 42861894 and 42861903.

It is a congruent number.

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, 92746 + ... + 93206.

It is an arithmetic number, because the mean of its divisors is an integer number (1503810).

Almost surely, 2^42861936 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 42861936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60152400).

42861936 is an abundant number, since it is smaller than the sum of its proper divisors (77442864).

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

42861936 is a wasteful number, since it uses less digits than its factorization.

42861936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 628 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 42861936 is about 6546.9027791773. The cubic root of 42861936 is about 349.9644480896.

The spelling of 42861936 in words is "forty-two million, eight hundred sixty-one thousand, nine hundred thirty-six".