2142121143 has 4 divisors (see below), whose sum is σ = 2856161528. Its totient is φ = 1428080760.

The previous prime is 2142121141. The next prime is 2142121147. The reversal of 2142121143 is 3411212412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2142121143 - 2¹ = 2142121141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142121141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357020188 + ... + 357020193.

It is an arithmetic number, because the mean of its divisors is an integer number (714040382).

Almost surely, 2^2142121143 is an apocalyptic number.

2142121143 is a deficient number, since it is larger than the sum of its proper divisors (714040385).

2142121143 is an equidigital number, since it uses as much as digits as its factorization.

2142121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714040384.

The product of its digits is 384, while the sum is 21.

The square root of 2142121143 is about 46283.0545988486. The cubic root of 2142121143 is about 1289.0843697779.

Adding to 2142121143 its reverse (3411212412), we get a palindrome (5553333555).

The spelling of 2142121143 in words is "two billion, one hundred forty-two million, one hundred twenty-one thousand, one hundred forty-three".