1305424520 has 32 divisors (see below), whose sum is σ = 2945419200. Its totient is φ = 520709568.

The previous prime is 1305424513. The next prime is 1305424529. The reversal of 1305424520 is 254245031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305424520.

It is not an unprimeable number, because it can be changed into a prime (1305424529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31094 + ... + 59813.

It is an arithmetic number, because the mean of its divisors is an integer number (92044350).

Almost surely, 2^1305424520 is an apocalyptic number.

1305424520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1305424520 is an abundant number, since it is smaller than the sum of its proper divisors (1639994680).

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

1305424520 is a wasteful number, since it uses less digits than its factorization.

1305424520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91277 (or 91273 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1305424520 is about 36130.6590031236. The cubic root of 1305424520 is about 1092.9087976821.

Adding to 1305424520 its reverse (254245031), we get a palindrome (1559669551).

The spelling of 1305424520 in words is "one billion, three hundred five million, four hundred twenty-four thousand, five hundred twenty".