305515042 has 16 divisors (see below), whose sum is σ = 531558720. Its totient is φ = 128980368.

The previous prime is 305515037. The next prime is 305515051. The reversal of 305515042 is 240515503.

It is a junction number, because it is equal to n+sod(n) for n = 305514998 and 305515016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161917 + ... + 163792.

It is an arithmetic number, because the mean of its divisors is an integer number (33222420).

Almost surely, 2^305515042 is an apocalyptic number.

305515042 is a deficient number, since it is larger than the sum of its proper divisors (226043678).

305515042 is a wasteful number, since it uses less digits than its factorization.

305515042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325785.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 305515042 is about 17478.9885862998. The cubic root of 305515042 is about 673.5102339391.

The spelling of 305515042 in words is "three hundred five million, five hundred fifteen thousand, forty-two".