196487642 has 16 divisors (see below), whose sum is σ = 323394120. Its totient is φ = 88974912.

The previous prime is 196487639. The next prime is 196487647. The reversal of 196487642 is 246784691.

It can be written as a sum of positive squares in 4 ways, for example, as 94497841 + 101989801 = 9721^2 + 10099^2 .

It is not an unprimeable number, because it can be changed into a prime (196487647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69917 + ... + 72672.

Almost surely, 2^196487642 is an apocalyptic number.

196487642 is a deficient number, since it is larger than the sum of its proper divisors (126906478).

196487642 is a wasteful number, since it uses less digits than its factorization.

196487642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142657.

The product of its digits is 580608, while the sum is 47.

The square root of 196487642 is about 14017.4049666834. The cubic root of 196487642 is about 581.3599104290.

The spelling of 196487642 in words is "one hundred ninety-six million, four hundred eighty-seven thousand, six hundred forty-two".