1300443140 has 24 divisors (see below), whose sum is σ = 2775702552. Its totient is φ = 511649280.

The previous prime is 1300443121. The next prime is 1300443167. The reversal of 1300443140 is 413440031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 119421184 + 1181021956 = 10928^2 + 34366^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531749 + ... + 534188.

It is an arithmetic number, because the mean of its divisors is an integer number (115654273).

Almost surely, 2^1300443140 is an apocalyptic number.

1300443140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300443140 is an abundant number, since it is smaller than the sum of its proper divisors (1475259412).

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

1300443140 is a wasteful number, since it uses less digits than its factorization.

1300443140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066007 (or 1066005 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1300443140 is about 36061.6574771599. The cubic root of 1300443140 is about 1091.5168791890.

Adding to 1300443140 its reverse (413440031), we get a palindrome (1713883171).

The spelling of 1300443140 in words is "one billion, three hundred million, four hundred forty-three thousand, one hundred forty".