42007186 has 8 divisors (see below), whose sum is σ = 67857804. Its totient is φ = 19387920.

The previous prime is 42007171. The next prime is 42007243. The reversal of 42007186 is 68170024.

It can be written as a sum of positive squares in 2 ways, for example, as 40640625 + 1366561 = 6375^2 + 1169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807805 + ... + 807856.

Almost surely, 2^42007186 is an apocalyptic number.

42007186 is a deficient number, since it is larger than the sum of its proper divisors (25850618).

42007186 is a wasteful number, since it uses less digits than its factorization.

42007186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615676.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 42007186 is about 6481.2950866320. The cubic root of 42007186 is about 347.6224877450.

The spelling of 42007186 in words is "forty-two million, seven thousand, one hundred eighty-six".