1305342534 has 16 divisors (see below), whose sum is σ = 2613921840. Its totient is φ = 434574720.

The previous prime is 1305342509. The next prime is 1305342553. The reversal of 1305342534 is 4352435031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129607 + ... + 139314.

It is an arithmetic number, because the mean of its divisors is an integer number (163370115).

Almost surely, 2^1305342534 is an apocalyptic number.

1305342534 is an abundant number, since it is smaller than the sum of its proper divisors (1308579306).

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

1305342534 is a wasteful number, since it uses less digits than its factorization.

1305342534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269735.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 1305342534 is about 36129.5244087159. The cubic root of 1305342534 is about 1092.8859174887.

Adding to 1305342534 its reverse (4352435031), we get a palindrome (5657777565).

The spelling of 1305342534 in words is "one billion, three hundred five million, three hundred forty-two thousand, five hundred thirty-four".