42071506 has 16 divisors (see below), whose sum is σ = 65190744. Its totient is φ = 20352384.

The previous prime is 42071503. The next prime is 42071507. The reversal of 42071506 is 60517024.

42071506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40208281 + 1863225 = 6341^2 + 1365^2 .

It is not an unprimeable number, because it can be changed into a prime (42071503) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5020 + ... + 10456.

Almost surely, 2^42071506 is an apocalyptic number.

42071506 is a deficient number, since it is larger than the sum of its proper divisors (23119238).

42071506 is a wasteful number, since it uses less digits than its factorization.

42071506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 42071506 is about 6486.2551599517. The cubic root of 42071506 is about 347.7998199145.

The spelling of 42071506 in words is "forty-two million, seventy-one thousand, five hundred six".