1305140052 has 72 divisors (see below), whose sum is σ = 3206560000. Its totient is φ = 412738560.

The previous prime is 1305140027. The next prime is 1305140071. The reversal of 1305140052 is 2500415031.

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 23 ways as a sum of consecutive naturals, for example, 1044324 + ... + 1045572.

Almost surely, 2^1305140052 is an apocalyptic number.

1305140052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1305140052 is an abundant number, since it is smaller than the sum of its proper divisors (1901419948).

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

1305140052 is a wasteful number, since it uses less digits than its factorization.

1305140052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1305140052 is about 36126.7221319621. The cubic root of 1305140052 is about 1092.8294058417.

Adding to 1305140052 its reverse (2500415031), we get a palindrome (3805555083).

The spelling of 1305140052 in words is "one billion, three hundred five million, one hundred forty thousand, fifty-two".