1242715707503 has 4 divisors (see below), whose sum is σ = 1247551177440. Its totient is φ = 1237880237568.

The previous prime is 1242715707437. The next prime is 1242715707509. The reversal of 1242715707503 is 3057075172421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242715707503 - 2¹⁸ = 1242715445359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242715707509) 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, 2417734583 + ... + 2417735096.

It is an arithmetic number, because the mean of its divisors is an integer number (311887794360).

Almost surely, 2^{1242715707503} is an apocalyptic number.

1242715707503 is a deficient number, since it is larger than the sum of its proper divisors (4835469937).

1242715707503 is an equidigital number, since it uses as much as digits as its factorization.

1242715707503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835469936.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 1242715707503 in words is "one trillion, two hundred forty-two billion, seven hundred fifteen million, seven hundred seven thousand, five hundred three".