1320145132 has 24 divisors (see below), whose sum is σ = 2457771120. Its totient is φ = 618293760.

The previous prime is 1320145121. The next prime is 1320145139. The reversal of 1320145132 is 2315410231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1320145139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31657 + ... + 60352.

It is an arithmetic number, because the mean of its divisors is an integer number (102407130).

Almost surely, 2^1320145132 is an apocalyptic number.

It is an amenable number.

1320145132 is a deficient number, since it is larger than the sum of its proper divisors (1137625988).

1320145132 is a wasteful number, since it uses less digits than its factorization.

1320145132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92241 (or 92239 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1320145132 is about 36333.8015076870. The cubic root of 1320145132 is about 1097.0015120912.

Adding to 1320145132 its reverse (2315410231), we get a palindrome (3635555363).

The spelling of 1320145132 in words is "one billion, three hundred twenty million, one hundred forty-five thousand, one hundred thirty-two".