1300402240 has 28 divisors (see below), whose sum is σ = 3096583596. Its totient is φ = 520160768.

The previous prime is 1300402189. The next prime is 1300402247. The reversal of 1300402240 is 422040031.

It can be written as a sum of positive squares in 2 ways, for example, as 184307776 + 1116094464 = 13576^2 + 33408^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1300402247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2031559 + ... + 2032198.

Almost surely, 2^1300402240 is an apocalyptic number.

1300402240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300402240 is an abundant number, since it is smaller than the sum of its proper divisors (1796181356).

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

1300402240 is an equidigital number, since it uses as much as digits as its factorization.

1300402240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063774 (or 4063764 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1300402240 is about 36061.0903883951. The cubic root of 1300402240 is about 1091.5054360363.

Adding to 1300402240 its reverse (422040031), we get a palindrome (1722442271).

The spelling of 1300402240 in words is "one billion, three hundred million, four hundred two thousand, two hundred forty".