1345304140 has 12 divisors (see below), whose sum is σ = 2825138736. Its totient is φ = 538121648.

The previous prime is 1345304137. The next prime is 1345304161. The reversal of 1345304140 is 414035431.

It is a super-2 number, since 2×1345304140² = 3619686458202279200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33632584 + ... + 33632623.

It is an arithmetic number, because the mean of its divisors is an integer number (235428228).

Almost surely, 2^1345304140 is an apocalyptic number.

1345304140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345304140 is an abundant number, since it is smaller than the sum of its proper divisors (1479834596).

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

1345304140 is a wasteful number, since it uses less digits than its factorization.

1345304140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67265216 (or 67265214 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1345304140 is about 36678.3879144109. The cubic root of 1345304140 is about 1103.9265019246.

Adding to 1345304140 its reverse (414035431), we get a palindrome (1759339571).

The spelling of 1345304140 in words is "one billion, three hundred forty-five million, three hundred four thousand, one hundred forty".