642248 has 16 divisors (see below), whose sum is σ = 1232880. Its totient is φ = 313488.

The previous prime is 642247. The next prime is 642253. The reversal of 642248 is 842246.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642248.

It is not an unprimeable number, because it can be changed into a prime (642241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (77055).

2⁶⁴²²⁴⁸ is an apocalyptic number.

It is an amenable number.

642248 is a deficient number, since it is larger than the sum of its proper divisors (590632).

642248 is a wasteful number, since it uses less digits than its factorization.

642248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1912 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 642248 is about 801.4037683964. The cubic root of 642248 is about 86.2781690529.

The spelling of 642248 in words is "six hundred forty-two thousand, two hundred forty-eight".