1215034042152 has 128 divisors (see below), whose sum is σ = 3577524652800. Its totient is φ = 336616777728.

The previous prime is 1215034042099. The next prime is 1215034042169. The reversal of 1215034042152 is 2512404305121.

It is a super-2 number, since 2×1215034042152² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1487724 + ... + 2154852.

It is an arithmetic number, because the mean of its divisors is an integer number (27949411350).

Almost surely, 2^{1215034042152} is an apocalyptic number.

1215034042152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215034042152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788762326400).

1215034042152 is an abundant number, since it is smaller than the sum of its proper divisors (2362490610648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215034042152 is a wasteful number, since it uses less digits than its factorization.

1215034042152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667475 (or 667471 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1215034042152 its reverse (2512404305121), we get a palindrome (3727438347273).

The spelling of 1215034042152 in words is "one trillion, two hundred fifteen billion, thirty-four million, forty-two thousand, one hundred fifty-two".