305520142 has 8 divisors (see below), whose sum is σ = 458667936. Its totient is φ = 152630832.

The previous prime is 305520119. The next prime is 305520157. The reversal of 305520142 is 241025503.

305520142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61638 + ... + 66409.

It is an arithmetic number, because the mean of its divisors is an integer number (57333492).

Almost surely, 2^305520142 is an apocalyptic number.

305520142 is a deficient number, since it is larger than the sum of its proper divisors (153147794).

305520142 is a wasteful number, since it uses less digits than its factorization.

305520142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129242.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 305520142 is about 17479.1344751392. The cubic root of 305520142 is about 673.5139815812.

Adding to 305520142 its reverse (241025503), we get a palindrome (546545645).

The spelling of 305520142 in words is "three hundred five million, five hundred twenty thousand, one hundred forty-two".