1242031605263 has 8 divisors (see below), whose sum is σ = 1248299576832. Its totient is φ = 1235770620696.

The previous prime is 1242031605107. The next prime is 1242031605307. The reversal of 1242031605263 is 3625061302421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242031605263 - 2²⁸ = 1241763169807 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 (1242031602263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390145 + ... + 2101562.

It is an arithmetic number, because the mean of its divisors is an integer number (156037447104).

Almost surely, 2^{1242031605263} is an apocalyptic number.

1242031605263 is a deficient number, since it is larger than the sum of its proper divisors (6267971569).

1242031605263 is a wasteful number, since it uses less digits than its factorization.

1242031605263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493501.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 1242031605263 its reverse (3625061302421), we get a palindrome (4867092907684).

The spelling of 1242031605263 in words is "one trillion, two hundred forty-two billion, thirty-one million, six hundred five thousand, two hundred sixty-three".