1306142736 has 40 divisors (see below), whose sum is σ = 3429524544. Its totient is φ = 428242560.

The previous prime is 1306142731. The next prime is 1306142741. The reversal of 1306142736 is 6372416031.

It is an interprime number because it is at equal distance from previous prime (1306142731) and next prime (1306142741).

It is a junction number, because it is equal to n+sod(n) for n = 1306142697 and 1306142706.

It is not an unprimeable number, because it can be changed into a prime (1306142731) 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, 220116 + ... + 225971.

Almost surely, 2^1306142736 is an apocalyptic number.

1306142736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1306142736 is an abundant number, since it is smaller than the sum of its proper divisors (2123381808).

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

1306142736 is a wasteful number, since it uses less digits than its factorization.

1306142736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446159 (or 446153 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 1306142736 is about 36140.5967853327. The cubic root of 1306142736 is about 1093.1091924359.

Adding to 1306142736 its reverse (6372416031), we get a palindrome (7678558767).

The spelling of 1306142736 in words is "one billion, three hundred six million, one hundred forty-two thousand, seven hundred thirty-six".