1345273120 has 24 divisors (see below), whose sum is σ = 3178208124. Its totient is φ = 538109184.

The previous prime is 1345273109. The next prime is 1345273123. The reversal of 1345273120 is 213725431.

It can be written as a sum of positive squares in 2 ways, for example, as 1278491536 + 66781584 = 35756^2 + 8172^2 .

It is not an unprimeable number, because it can be changed into a prime (1345273123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4203819 + ... + 4204138.

Almost surely, 2^1345273120 is an apocalyptic number.

1345273120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345273120 is an abundant number, since it is smaller than the sum of its proper divisors (1832935004).

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

1345273120 is an equidigital number, since it uses as much as digits as its factorization.

1345273120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407972 (or 8407964 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1345273120 is about 36677.9650471506. The cubic root of 1345273120 is about 1103.9180170865.

Adding to 1345273120 its reverse (213725431), we get a palindrome (1558998551).

The spelling of 1345273120 in words is "one billion, three hundred forty-five million, two hundred seventy-three thousand, one hundred twenty".