305142424 has 48 divisors (see below), whose sum is σ = 604514880. Its totient is φ = 144248640.

The previous prime is 305142419. The next prime is 305142427. The reversal of 305142424 is 424241503.

It is a happy number.

It is a super-2 number, since 2×305142424² = 186223797849191552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305142427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 547554 + ... + 548110.

It is an arithmetic number, because the mean of its divisors is an integer number (12594060).

Almost surely, 2^305142424 is an apocalyptic number.

It is an amenable number.

305142424 is a deficient number, since it is larger than the sum of its proper divisors (299372456).

305142424 is a wasteful number, since it uses less digits than its factorization.

305142424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 305142424 is about 17468.3263079209. The cubic root of 305142424 is about 673.2363094742.

Adding to 305142424 its reverse (424241503), we get a palindrome (729383927).

The spelling of 305142424 in words is "three hundred five million, one hundred forty-two thousand, four hundred twenty-four".