42806146 has 16 divisors (see below), whose sum is σ = 66637440. Its totient is φ = 20598480.

The previous prime is 42806129. The next prime is 42806147. The reversal of 42806146 is 64160824.

It is a super-2 number, since 2×42806146² = 3664732270746632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42806147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20281 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (4164840).

Almost surely, 2^42806146 is an apocalyptic number.

42806146 is a deficient number, since it is larger than the sum of its proper divisors (23831294).

42806146 is a wasteful number, since it uses less digits than its factorization.

42806146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 42806146 is about 6542.6405984128. The cubic root of 42806146 is about 349.8125417931.

The spelling of 42806146 in words is "forty-two million, eight hundred six thousand, one hundred forty-six".