305042057 has 8 divisors (see below), whose sum is σ = 310588992. Its totient is φ = 299530000.

The previous prime is 305042053. The next prime is 305042099. The reversal of 305042057 is 750240503.

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

It is a cyclic number.

It is not a de Polignac number, because 305042057 - 2² = 305042053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305042053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9263 + ... + 26379.

It is an arithmetic number, because the mean of its divisors is an integer number (38823624).

Almost surely, 2^305042057 is an apocalyptic number.

It is an amenable number.

305042057 is a deficient number, since it is larger than the sum of its proper divisors (5546935).

305042057 is a wasteful number, since it uses less digits than its factorization.

305042057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17439.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 305042057 is about 17465.4532434747. The cubic root of 305042057 is about 673.1624880789.

The spelling of 305042057 in words is "three hundred five million, forty-two thousand, fifty-seven".