1215522500142 has 16 divisors (see below), whose sum is σ = 2536742609280. Its totient is φ = 387557898552.

The previous prime is 1215522500081. The next prime is 1215522500147. The reversal of 1215522500142 is 2410052255121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215522500147) 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, 4404066892 + ... + 4404067167.

It is an arithmetic number, because the mean of its divisors is an integer number (158546413080).

Almost surely, 2^{1215522500142} is an apocalyptic number.

1215522500142 is an abundant number, since it is smaller than the sum of its proper divisors (1321220109138).

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

1215522500142 is a wasteful number, since it uses less digits than its factorization.

1215522500142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8808134087.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 1215522500142 its reverse (2410052255121), we get a palindrome (3625574755263).

The spelling of 1215522500142 in words is "one trillion, two hundred fifteen billion, five hundred twenty-two million, five hundred thousand, one hundred forty-two".