305145144025242 has 32 divisors (see below), whose sum is σ = 668472120792000. Its totient is φ = 92430712996608.

The previous prime is 305145144025193. The next prime is 305145144025279. The reversal of 305145144025242 is 242520441541503.

It is a super-2 number, since 2×305145144025242² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305145144025194 and 305145144025203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51579635992 + ... + 51579641907.

It is an arithmetic number, because the mean of its divisors is an integer number (20889753774750).

Almost surely, 2^{305145144025242} is an apocalyptic number.

305145144025242 is an abundant number, since it is smaller than the sum of its proper divisors (363326976766758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305145144025242 is a wasteful number, since it uses less digits than its factorization.

305145144025242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103159277950.

The product of its (nonzero) digits is 768000, while the sum is 42.

Adding to 305145144025242 its reverse (242520441541503), we get a palindrome (547665585566745).

The spelling of 305145144025242 in words is "three hundred five trillion, one hundred forty-five billion, one hundred forty-four million, twenty-five thousand, two hundred forty-two".