2121144142 has 16 divisors (see below), whose sum is σ = 3457903680. Its totient is φ = 970006752.

The previous prime is 2121144133. The next prime is 2121144161. The reversal of 2121144142 is 2414411212.

It is a super-3 number, since 3×2121144142³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 371398 + ... + 377065.

It is an arithmetic number, because the mean of its divisors is an integer number (216118980).

Almost surely, 2^2121144142 is an apocalyptic number.

2121144142 is a deficient number, since it is larger than the sum of its proper divisors (1336759538).

2121144142 is a wasteful number, since it uses less digits than its factorization.

2121144142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748587.

The product of its digits is 512, while the sum is 22.

The square root of 2121144142 is about 46055.8806451467. The cubic root of 2121144142 is about 1284.8627169422.

Adding to 2121144142 its reverse (2414411212), we get a palindrome (4535555354).

The spelling of 2121144142 in words is "two billion, one hundred twenty-one million, one hundred forty-four thousand, one hundred forty-two".