305499842 has 4 divisors (see below), whose sum is σ = 458249766. Its totient is φ = 152749920.

The previous prime is 305499829. The next prime is 305499853. The reversal of 305499842 is 248994503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 281870521 + 23629321 = 16789^2 + 4861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 305499793 and 305499802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76374959 + ... + 76374962.

Almost surely, 2^305499842 is an apocalyptic number.

305499842 is a deficient number, since it is larger than the sum of its proper divisors (152749924).

305499842 is a wasteful number, since it uses less digits than its factorization.

305499842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152749923.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 305499842 is about 17478.5537731244. The cubic root of 305499842 is about 673.4990642486.

The spelling of 305499842 in words is "three hundred five million, four hundred ninety-nine thousand, eight hundred forty-two".