185290742 has 24 divisors (see below), whose sum is σ = 342414576. Its totient is φ = 73229184.

The previous prime is 185290727. The next prime is 185290747. The reversal of 185290742 is 247092581.

It is a junction number, because it is equal to n+sod(n) for n = 185290696 and 185290705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185290747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183134 + ... + 184142.

It is an arithmetic number, because the mean of its divisors is an integer number (14267274).

Almost surely, 2^185290742 is an apocalyptic number.

185290742 is a deficient number, since it is larger than the sum of its proper divisors (157123834).

185290742 is an equidigital number, since it uses as much as digits as its factorization.

185290742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 185290742 is about 13612.1542013011. The cubic root of 185290742 is about 570.1002614235.

The spelling of 185290742 in words is "one hundred eighty-five million, two hundred ninety thousand, seven hundred forty-two".