1306142972045 has 4 divisors (see below), whose sum is σ = 1567371566460. Its totient is φ = 1044914377632.

The previous prime is 1306142972023. The next prime is 1306142972081. The reversal of 1306142972045 is 5402792416031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 202554903721 + 1103588068324 = 450061^2 + 1050518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306142972045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1306142971987 and 1306142972005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130614297200 + ... + 130614297209.

It is an arithmetic number, because the mean of its divisors is an integer number (391842891615).

Almost surely, 2^{1306142972045} is an apocalyptic number.

It is an amenable number.

1306142972045 is a deficient number, since it is larger than the sum of its proper divisors (261228594415).

1306142972045 is an equidigital number, since it uses as much as digits as its factorization.

1306142972045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261228594414.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 1306142972045 in words is "one trillion, three hundred six billion, one hundred forty-two million, nine hundred seventy-two thousand, forty-five".