4040146 has 16 divisors (see below), whose sum is σ = 6648480. Its totient is φ = 1826080.

The previous prime is 4040129. The next prime is 4040159. The reversal of 4040146 is 6410404.

It is an Ulam number.

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 in 7 ways as a sum of consecutive naturals, for example, 4590 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (415530).

Almost surely, 2^4040146 is an apocalyptic number.

4040146 is a deficient number, since it is larger than the sum of its proper divisors (2608334).

4040146 is a wasteful number, since it uses less digits than its factorization.

4040146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4040146 is about 2010.0114427535. The cubic root of 4040146 is about 159.2694033814.

It can be divided in two parts, 4040 and 146, that added together give a triangular number (4186 = T₉₁).

The spelling of 4040146 in words is "four million, forty thousand, one hundred forty-six".