642041 has 8 divisors (see below), whose sum is σ = 672000. Its totient is φ = 612720.

The previous prime is 642013. The next prime is 642049. The reversal of 642041 is 140246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642041 - 2¹⁴ = 625657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (642049) 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, 4235 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2⁶⁴²⁰⁴¹ is an apocalyptic number.

It is an amenable number.

642041 is a deficient number, since it is larger than the sum of its proper divisors (29959).

642041 is a wasteful number, since it uses less digits than its factorization.

642041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 642041 is about 801.2746096065. The cubic root of 642041 is about 86.2688987502.

Adding to 642041 its reverse (140246), we get a palindrome (782287).

The spelling of 642041 in words is "six hundred forty-two thousand, forty-one".