42861858 has 16 divisors (see below), whose sum is σ = 92318016. Its totient is φ = 13188240.

The previous prime is 42861839. The next prime is 42861859. The reversal of 42861858 is 85816824.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42861859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274678 + ... + 274833.

It is an arithmetic number, because the mean of its divisors is an integer number (5769876).

Almost surely, 2^42861858 is an apocalyptic number.

42861858 is an abundant number, since it is smaller than the sum of its proper divisors (49456158).

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

42861858 is a wasteful number, since it uses less digits than its factorization.

42861858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549529.

The product of its digits is 122880, while the sum is 42.

The square root of 42861858 is about 6546.8968221593. The cubic root of 42861858 is about 349.9642358014.

The spelling of 42861858 in words is "forty-two million, eight hundred sixty-one thousand, eight hundred fifty-eight".