142704194 has 4 divisors (see below), whose sum is σ = 214056294. Its totient is φ = 71352096.

The previous prime is 142704187. The next prime is 142704209. The reversal of 142704194 is 491407241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 126000625 + 16703569 = 11225^2 + 4087^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142704194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35676047 + ... + 35676050.

Almost surely, 2^142704194 is an apocalyptic number.

142704194 is a deficient number, since it is larger than the sum of its proper divisors (71352100).

142704194 is an equidigital number, since it uses as much as digits as its factorization.

142704194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71352099.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 142704194 is about 11945.8860701080. The cubic root of 142704194 is about 522.5713297459.

The spelling of 142704194 in words is "one hundred forty-two million, seven hundred four thousand, one hundred ninety-four".