1305142516 has 12 divisors (see below), whose sum is σ = 2286652032. Its totient is φ = 651813368.

The previous prime is 1305142507. The next prime is 1305142529. The reversal of 1305142516 is 6152415031.

It is a super-3 number, since 3×1305142516³ (a number of 28 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 185590 + ... + 192493.

It is an arithmetic number, because the mean of its divisors is an integer number (190554336).

Almost surely, 2^1305142516 is an apocalyptic number.

It is an amenable number.

1305142516 is a deficient number, since it is larger than the sum of its proper divisors (981509516).

1305142516 is a wasteful number, since it uses less digits than its factorization.

1305142516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378950 (or 378948 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1305142516 is about 36126.7562341265. The cubic root of 1305142516 is about 1092.8300935661.

Adding to 1305142516 its reverse (6152415031), we get a palindrome (7457557547).

The spelling of 1305142516 in words is "one billion, three hundred five million, one hundred forty-two thousand, five hundred sixteen".