42861860 has 12 divisors (see below), whose sum is σ = 90009948. Its totient is φ = 17144736.

The previous prime is 42861859. The next prime is 42861893. The reversal of 42861860 is 6816824.

It can be written as a sum of positive squares in 2 ways, for example, as 28558336 + 14303524 = 5344^2 + 3782^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42861860.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071527 + ... + 1071566.

It is an arithmetic number, because the mean of its divisors is an integer number (7500829).

Almost surely, 2^42861860 is an apocalyptic number.

It is an amenable number.

42861860 is an abundant number, since it is smaller than the sum of its proper divisors (47148088).

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

42861860 is a wasteful number, since it uses less digits than its factorization.

42861860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143102 (or 2143100 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 42861860 is about 6546.8969749035. The cubic root of 42861860 is about 349.9642412447.

The spelling of 42861860 in words is "forty-two million, eight hundred sixty-one thousand, eight hundred sixty".