2120452542 has 24 divisors (see below), whose sum is σ = 4947723144. Its totient is φ = 652446864.

The previous prime is 2120452513. The next prime is 2120452549. The reversal of 2120452542 is 2452540212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120452549) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4530648 + ... + 4531115.

It is an arithmetic number, because the mean of its divisors is an integer number (206155131).

Almost surely, 2^2120452542 is an apocalyptic number.

2120452542 is an abundant number, since it is smaller than the sum of its proper divisors (2827270602).

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

2120452542 is a wasteful number, since it uses less digits than its factorization.

2120452542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9061784 (or 9061781 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2120452542 is about 46048.3717627453. The cubic root of 2120452542 is about 1284.7230584073.

Adding to 2120452542 its reverse (2452540212), we get a palindrome (4572992754).

The spelling of 2120452542 in words is "two billion, one hundred twenty million, four hundred fifty-two thousand, five hundred forty-two".