642110 has 16 divisors (see below), whose sum is σ = 1321056. Its totient is φ = 220128.

The previous prime is 642079. The next prime is 642113. The reversal of 642110 is 11246.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642113) by changing a digit.

642110 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 4517 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (82566).

2⁶⁴²¹¹⁰ is an apocalyptic number.

642110 is an abundant number, since it is smaller than the sum of its proper divisors (678946).

It is a weird number, because it is abundant, but not a pseudoperfect number.

642110 is a wasteful number, since it uses less digits than its factorization.

642110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 642110 is about 801.3176648496. The cubic root of 642110 is about 86.2719890725.

Adding to 642110 its reverse (11246), we get a palindrome (653356).

The spelling of 642110 in words is "six hundred forty-two thousand, one hundred ten".