1215000000242 has 8 divisors (see below), whose sum is σ = 2082857143296. Its totient is φ = 520714285812.

The previous prime is 1215000000209. The next prime is 1215000000259. The reversal of 1215000000242 is 2420000005121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1215000000242.

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, 43392857138 + ... + 43392857165.

It is an arithmetic number, because the mean of its divisors is an integer number (260357142912).

Almost surely, 2^{1215000000242} is an apocalyptic number.

1215000000242 is a deficient number, since it is larger than the sum of its proper divisors (867857143054).

1215000000242 is an equidigital number, since it uses as much as digits as its factorization.

1215000000242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86785714312.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 1215000000242 its reverse (2420000005121), we get a palindrome (3635000005363).

The spelling of 1215000000242 in words is "one trillion, two hundred fifteen billion, two hundred forty-two", and thus it is an aban number.