2120312142 has 24 divisors (see below), whose sum is σ = 4947395544. Its totient is φ = 652403664.

The previous prime is 2120312141. The next prime is 2120312153. The reversal of 2120312142 is 2412130212.

It is a happy number.

2120312142 is a `hidden beast` number, since 212 + 0 + 312 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120312141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4530348 + ... + 4530815.

It is an arithmetic number, because the mean of its divisors is an integer number (206141481).

Almost surely, 2^2120312142 is an apocalyptic number.

2120312142 is an abundant number, since it is smaller than the sum of its proper divisors (2827083402).

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

2120312142 is a wasteful number, since it uses less digits than its factorization.

2120312142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9061184 (or 9061181 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2120312142 is about 46046.8472536394. The cubic root of 2120312142 is about 1284.6947029666.

Adding to 2120312142 its reverse (2412130212), we get a palindrome (4532442354).

The spelling of 2120312142 in words is "two billion, one hundred twenty million, three hundred twelve thousand, one hundred forty-two".