300405420 has 72 divisors (see below), whose sum is σ = 1041409824. Its totient is φ = 68663808.

The previous prime is 300405379. The next prime is 300405433. The reversal of 300405420 is 24504003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 300405393 and 300405402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117949 + ... + 120468.

Almost surely, 2^300405420 is an apocalyptic number.

300405420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

300405420 is an abundant number, since it is smaller than the sum of its proper divisors (741004404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

300405420 is a wasteful number, since it uses less digits than its factorization.

300405420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238439 (or 238434 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 300405420 is about 17332.2075916486. The cubic root of 300405420 is about 669.7343715722.

Adding to 300405420 its reverse (24504003), we get a palindrome (324909423).

The spelling of 300405420 in words is "three hundred million, four hundred five thousand, four hundred twenty".