1247131003749 has 8 divisors (see below), whose sum is σ = 1716481381632. Its totient is φ = 804600647520.

The previous prime is 1247131003697. The next prime is 1247131003751. The reversal of 1247131003749 is 9473001317421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1247131003749 - 2¹⁶ = 1247130938213 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1247131003749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247131003799) 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, 6705005304 + ... + 6705005489.

It is an arithmetic number, because the mean of its divisors is an integer number (214560172704).

Almost surely, 2^{1247131003749} is an apocalyptic number.

It is an amenable number.

1247131003749 is a deficient number, since it is larger than the sum of its proper divisors (469350377883).

1247131003749 is a wasteful number, since it uses less digits than its factorization.

1247131003749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13410010827.

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 1247131003749 in words is "one trillion, two hundred forty-seven billion, one hundred thirty-one million, three thousand, seven hundred forty-nine".