642107 has 8 divisors (see below), whose sum is σ = 688176. Its totient is φ = 596992.

The previous prime is 642079. The next prime is 642113. The reversal of 642107 is 701246.

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 642107 - 2¹⁰ = 641083 is a prime.

It is a Duffinian number.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (642157) 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, 1643 + ... + 1995.

It is an arithmetic number, because the mean of its divisors is an integer number (86022).

2⁶⁴²¹⁰⁷ is an apocalyptic number.

642107 is a deficient number, since it is larger than the sum of its proper divisors (46069).

642107 is a wasteful number, since it uses less digits than its factorization.

642107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 642107 is about 801.3157929306. The cubic root of 642107 is about 86.2718547153.

The spelling of 642107 in words is "six hundred forty-two thousand, one hundred seven".