642196 has 12 divisors (see below), whose sum is σ = 1160320. Its totient is φ = 310680.

The previous prime is 642163. The next prime is 642197. The reversal of 642196 is 691246.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642197) 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, 2466 + ... + 2713.

2⁶⁴²¹⁹⁶ is an apocalyptic number.

It is an amenable number.

642196 is a deficient number, since it is larger than the sum of its proper divisors (518124).

642196 is a wasteful number, since it uses less digits than its factorization.

642196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214 (or 5212 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 642196 is about 801.3713246679. The cubic root of 642196 is about 86.2758404686.

It can be divided in two parts, 642 and 196, that added together give a palindrome (838).

The spelling of 642196 in words is "six hundred forty-two thousand, one hundred ninety-six".