305420407 has 4 divisors (see below), whose sum is σ = 305455696. Its totient is φ = 305385120.

The previous prime is 305420359. The next prime is 305420449. The reversal of 305420407 is 704024503.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 305420407 - 2⁷ = 305420279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305420207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5182 + ... + 25252.

It is an arithmetic number, because the mean of its divisors is an integer number (76363924).

Almost surely, 2^305420407 is an apocalyptic number.

305420407 is a deficient number, since it is larger than the sum of its proper divisors (35289).

305420407 is a wasteful number, since it uses less digits than its factorization.

305420407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35288.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 305420407 is about 17476.2812691945. The cubic root of 305420407 is about 673.4406855651.

The spelling of 305420407 in words is "three hundred five million, four hundred twenty thousand, four hundred seven".