143642196 has 18 divisors (see below), whose sum is σ = 363095642. Its totient is φ = 47880720.

The previous prime is 143642179. The next prime is 143642201. The reversal of 143642196 is 691246341.

143642196 is a `hidden beast` number, since 1 + 4 + 3 + 642 + 1 + 9 + 6 = 666.

143642196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 94361796 + 49280400 = 9714^2 + 7020^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3990061 = 143642196 / (1 + 4 + 3 + 6 + 4 + 2 + 1 + 9 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 143642196.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1994995 + ... + 1995066.

Almost surely, 2^143642196 is an apocalyptic number.

It is an amenable number.

143642196 is an abundant number, since it is smaller than the sum of its proper divisors (219453446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143642196 is a wasteful number, since it uses less digits than its factorization.

143642196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990071 (or 3990066 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 143642196 is about 11985.0822275027. The cubic root of 143642196 is about 523.7137929680.

The spelling of 143642196 in words is "one hundred forty-three million, six hundred forty-two thousand, one hundred ninety-six".