185204242 has 4 divisors (see below), whose sum is σ = 277806366. Its totient is φ = 92602120.

The previous prime is 185204221. The next prime is 185204249. The reversal of 185204242 is 242402581.

185204242 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: 242402581 = 661 ⋅366721.

It can be written as a sum of positive squares in only one way, i.e., 184932801 + 271441 = 13599^2 + 521^2 .

It is a super-2 number, since 2×185204242² = 68601222509589128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 185204242.

It is not an unprimeable number, because it can be changed into a prime (185204249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46301059 + ... + 46301062.

Almost surely, 2^185204242 is an apocalyptic number.

185204242 is a deficient number, since it is larger than the sum of its proper divisors (92602124).

185204242 is an equidigital number, since it uses as much as digits as its factorization.

185204242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92602123.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 185204242 is about 13608.9765228690. The cubic root of 185204242 is about 570.0115335719.

The spelling of 185204242 in words is "one hundred eighty-five million, two hundred four thousand, two hundred forty-two".