4008642 has 16 divisors (see below), whose sum is σ = 8746272. Its totient is φ = 1214720.

The previous prime is 4008629. The next prime is 4008643. The reversal of 4008642 is 2468004.

4008642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4008643) 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, 30303 + ... + 30434.

It is an arithmetic number, because the mean of its divisors is an integer number (546642).

Almost surely, 2^4008642 is an apocalyptic number.

4008642 is an abundant number, since it is smaller than the sum of its proper divisors (4737630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4008642 is a wasteful number, since it uses less digits than its factorization.

4008642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60753.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 4008642 is about 2002.1593343188. The cubic root of 4008642 is about 158.8543422989.

The spelling of 4008642 in words is "four million, eight thousand, six hundred forty-two".