42071858 has 4 divisors (see below), whose sum is σ = 63107790. Its totient is φ = 21035928.

The previous prime is 42071839. The next prime is 42071873. The reversal of 42071858 is 85817024.

42071858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36084049 + 5987809 = 6007^2 + 2447^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517963 + ... + 10517966.

Almost surely, 2^42071858 is an apocalyptic number.

42071858 is a deficient number, since it is larger than the sum of its proper divisors (21035932).

42071858 is a wasteful number, since it uses less digits than its factorization.

42071858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21035931.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 42071858 is about 6486.2822941960. The cubic root of 42071858 is about 347.8007898916.

The spelling of 42071858 in words is "forty-two million, seventy-one thousand, eight hundred fifty-eight".