2042120140 has 12 divisors (see below), whose sum is σ = 4288452336. Its totient is φ = 816848048.

The previous prime is 2042120137. The next prime is 2042120147. The reversal of 2042120140 is 410212402.

It is not an unprimeable number, because it can be changed into a prime (2042120147) 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 3 ways as a sum of consecutive naturals, for example, 51052984 + ... + 51053023.

It is an arithmetic number, because the mean of its divisors is an integer number (357371028).

Almost surely, 2^2042120140 is an apocalyptic number.

2042120140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2042120140 is an abundant number, since it is smaller than the sum of its proper divisors (2246332196).

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

2042120140 is a wasteful number, since it uses less digits than its factorization.

2042120140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102106016 (or 102106014 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2042120140 is about 45189.8234119143. The cubic root of 2042120140 is about 1268.7043516462.

Adding to 2042120140 its reverse (410212402), we get a palindrome (2452332542).

The spelling of 2042120140 in words is "two billion, forty-two million, one hundred twenty thousand, one hundred forty".