304120005 has 32 divisors (see below), whose sum is σ = 556817664. Its totient is φ = 138848256.

The previous prime is 304119979. The next prime is 304120009. The reversal of 304120005 is 500021403.

It is not a de Polignac number, because 304120005 - 2¹³ = 304111813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304120009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115989 + ... + 118581.

It is an arithmetic number, because the mean of its divisors is an integer number (17400552).

Almost surely, 2^304120005 is an apocalyptic number.

304120005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

304120005 is a deficient number, since it is larger than the sum of its proper divisors (252697659).

304120005 is a wasteful number, since it uses less digits than its factorization.

304120005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 304120005 is about 17439.0368139986. The cubic root of 304120005 is about 672.4835464436.

Adding to 304120005 its reverse (500021403), we get a palindrome (804141408).

The spelling of 304120005 in words is "three hundred four million, one hundred twenty thousand, five".