194843142 has 60 divisors (see below), whose sum is σ = 458545620. Its totient is φ = 59793552.

The previous prime is 194843087. The next prime is 194843177. The reversal of 194843142 is 241348491.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 194843097 and 194843106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 513909 + ... + 514287.

It is an arithmetic number, because the mean of its divisors is an integer number (7642427).

Almost surely, 2^194843142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194843142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229272810).

194843142 is an abundant number, since it is smaller than the sum of its proper divisors (263702478).

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

194843142 is an equidigital number, since it uses as much as digits as its factorization.

194843142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 397 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 194843142 is about 13958.6224965073. The cubic root of 194843142 is about 579.7334704844.

The spelling of 194843142 in words is "one hundred ninety-four million, eight hundred forty-three thousand, one hundred forty-two".