642073 has 8 divisors (see below), whose sum is σ = 686880. Its totient is φ = 598080.

The previous prime is 642071. The next prime is 642077. The reversal of 642073 is 370246.

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 642073 - 2¹ = 642071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2938 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (85860).

2⁶⁴²⁰⁷³ is an apocalyptic number.

It is an amenable number.

642073 is a deficient number, since it is larger than the sum of its proper divisors (44807).

642073 is a wasteful number, since it uses less digits than its factorization.

642073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 642073 is about 801.2945775431. The cubic root of 642073 is about 86.2703319707.

The spelling of 642073 in words is "six hundred forty-two thousand, seventy-three".