1307240712 has 36 divisors (see below), whose sum is σ = 3541274685. Its totient is φ = 435644640.

The previous prime is 1307240699. The next prime is 1307240723. The reversal of 1307240712 is 2170427031.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 888874596 + 418366116 = 29814^2 + 20454^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25566.

It is a super-2 number, since 2×1307240712² = 3417756558220533888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 304662 + ... + 308922.

Almost surely, 2^1307240712 is an apocalyptic number.

1307240712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1307240712 is an abundant number, since it is smaller than the sum of its proper divisors (2234033973).

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

1307240712 is an frugal number, since it uses more digits than its factorization.

1307240712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534 (or 4266 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1307240712 is about 36155.7839356305. The cubic root of 1307240712 is about 1093.4154048874.

Adding to 1307240712 its reverse (2170427031), we get a palindrome (3477667743).

The spelling of 1307240712 in words is "one billion, three hundred seven million, two hundred forty thousand, seven hundred twelve".