3640042 has 8 divisors (see below), whose sum is σ = 6240096. Its totient is φ = 1560012.

The previous prime is 3640037. The next prime is 3640061. The reversal of 3640042 is 2400463.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129988 + ... + 130015.

It is an arithmetic number, because the mean of its divisors is an integer number (780012).

Almost surely, 2^3640042 is an apocalyptic number.

3640042 is a deficient number, since it is larger than the sum of its proper divisors (2600054).

3640042 is a wasteful number, since it uses less digits than its factorization.

3640042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260012.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 3640042 is about 1907.8894097929. The cubic root of 3640042 is about 153.8280252613.

The spelling of 3640042 in words is "three million, six hundred forty thousand, forty-two".