196642 has 4 divisors (see below), whose sum is σ = 294966. Its totient is φ = 98320.

The previous prime is 196613. The next prime is 196643. The reversal of 196642 is 246691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246691 = 43 ⋅5737.

It can be written as a sum of positive squares in only one way, i.e., 123201 + 73441 = 351^2 + 271^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 196642.

It is not an unprimeable number, because it can be changed into a prime (196643) by changing a digit.

196642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49159 + ... + 49162.

2¹⁹⁶⁶⁴² is an apocalyptic number.

196642 is a deficient number, since it is larger than the sum of its proper divisors (98324).

196642 is an equidigital number, since it uses as much as digits as its factorization.

196642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98323.

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

The square root of 196642 is about 443.4433447465. The cubic root of 196642 is about 58.1512106709.

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

The spelling of 196642 in words is "one hundred ninety-six thousand, six hundred forty-two".