305011142 has 32 divisors (see below), whose sum is σ = 505854720. Its totient is φ = 137285280.

The previous prime is 305011141. The next prime is 305011171. The reversal of 305011142 is 241110503.

It is a self number, because there is not a number n which added to its sum of digits gives 305011142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305011141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141392 + ... + 143532.

It is an arithmetic number, because the mean of its divisors is an integer number (15807960).

Almost surely, 2^305011142 is an apocalyptic number.

305011142 is a deficient number, since it is larger than the sum of its proper divisors (200843578).

305011142 is a wasteful number, since it uses less digits than its factorization.

305011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 305011142 is about 17464.5681881918. The cubic root of 305011142 is about 673.1397463827.

Adding to 305011142 its reverse (241110503), we get a palindrome (546121645).

The spelling of 305011142 in words is "three hundred five million, eleven thousand, one hundred forty-two".