2155013042142 has 16 divisors (see below), whose sum is σ = 4310046329472. Its totient is φ = 718334306520.

The previous prime is 2155013042141. The next prime is 2155013042191. The reversal of 2155013042142 is 2412403105512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155013042141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780873 + ... + 2218059.

It is an arithmetic number, because the mean of its divisors is an integer number (269377895592).

Almost surely, 2^{2155013042142} is an apocalyptic number.

2155013042142 is an abundant number, since it is smaller than the sum of its proper divisors (2155033287330).

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

2155013042142 is a wasteful number, since it uses less digits than its factorization.

2155013042142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687103.

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

Adding to 2155013042142 its reverse (2412403105512), we get a palindrome (4567416147654).

The spelling of 2155013042142 in words is "two trillion, one hundred fifty-five billion, thirteen million, forty-two thousand, one hundred forty-two".