1345104520 has 32 divisors (see below), whose sum is σ = 3027530520. Its totient is φ = 537856000.

The previous prime is 1345104517. The next prime is 1345104619. The reversal of 1345104520 is 254015431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1328310916 + 16793604 = 36446^2 + 4098^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216984 + ... + 223096.

Almost surely, 2^1345104520 is an apocalyptic number.

1345104520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345104520 is an abundant number, since it is smaller than the sum of its proper divisors (1682426000).

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

1345104520 is a wasteful number, since it uses less digits than its factorization.

1345104520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11625 (or 11621 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1345104520 is about 36675.6665924425. Note that the first 3 decimals coincide. The cubic root of 1345104520 is about 1103.8718979873.

Adding to 1345104520 its reverse (254015431), we get a palindrome (1599119951).

The spelling of 1345104520 in words is "one billion, three hundred forty-five million, one hundred four thousand, five hundred twenty".