194739242 has 4 divisors (see below), whose sum is σ = 292108866. Its totient is φ = 97369620.

The previous prime is 194739239. The next prime is 194739247. The reversal of 194739242 is 242937491.

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., 148376761 + 46362481 = 12181^2 + 6809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 194739242.

It is not an unprimeable number, because it can be changed into a prime (194739247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48684809 + ... + 48684812.

Almost surely, 2^194739242 is an apocalyptic number.

194739242 is a deficient number, since it is larger than the sum of its proper divisors (97369624).

194739242 is an equidigital number, since it uses as much as digits as its factorization.

194739242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97369623.

The product of its digits is 108864, while the sum is 41.

The square root of 194739242 is about 13954.9002862794. The cubic root of 194739242 is about 579.6304046425.

The spelling of 194739242 in words is "one hundred ninety-four million, seven hundred thirty-nine thousand, two hundred forty-two".