194402842 has 4 divisors (see below), whose sum is σ = 291604266. Its totient is φ = 97201420.

The previous prime is 194402801. The next prime is 194402911. The reversal of 194402842 is 248204491.

194402842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248204491 = 79 ⋅3141829.

It can be written as a sum of positive squares in only one way, i.e., 176331841 + 18071001 = 13279^2 + 4251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 194402798 and 194402807.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48600709 + ... + 48600712.

Almost surely, 2^194402842 is an apocalyptic number.

194402842 is a deficient number, since it is larger than the sum of its proper divisors (97201424).

194402842 is an equidigital number, since it uses as much as digits as its factorization.

194402842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97201423.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 194402842 is about 13942.8419628138. The cubic root of 194402842 is about 579.2964537134.

The spelling of 194402842 in words is "one hundred ninety-four million, four hundred two thousand, eight hundred forty-two".