1242915315849 has 112 divisors (see below), whose sum is σ = 1992809364480. Its totient is φ = 772550926560.

The previous prime is 1242915315799. The next prime is 1242915315853. The reversal of 1242915315849 is 9485135192421.

1242915315849 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 9 + 1 + 53 + 1 + 584 + 9 = 666.

It is not a de Polignac number, because 1242915315849 - 2⁷ = 1242915315721 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1242915315795 and 1242915315804.

It is not an unprimeable number, because it can be changed into a prime (1242915315869) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 950967454 + ... + 950968760.

Almost surely, 2^{1242915315849} is an apocalyptic number.

1242915315849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1242915315849 is a deficient number, since it is larger than the sum of its proper divisors (749894048631).

1242915315849 is an equidigital number, since it uses as much as digits as its factorization.

1242915315849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2367 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 1242915315849 in words is "one trillion, two hundred forty-two billion, nine hundred fifteen million, three hundred fifteen thousand, eight hundred forty-nine".