42304905 has 24 divisors (see below), whose sum is σ = 75037248. Its totient is φ = 22036896.

The previous prime is 42304883. The next prime is 42304909. The reversal of 42304905 is 50940324.

It is not a de Polignac number, because 42304905 - 2¹² = 42300809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42304909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8997 + ... + 12866.

It is an arithmetic number, because the mean of its divisors is an integer number (3126552).

Almost surely, 2^42304905 is an apocalyptic number.

42304905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42304905 is a deficient number, since it is larger than the sum of its proper divisors (32732343).

42304905 is a wasteful number, since it uses less digits than its factorization.

42304905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21917 (or 21914 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42304905 is about 6504.2220903041. Note that the first 3 decimals coincide. The cubic root of 42304905 is about 348.4417942254.

The spelling of 42304905 in words is "forty-two million, three hundred four thousand, nine hundred five".