2140528121 has 4 divisors (see below), whose sum is σ = 2145637200. Its totient is φ = 2135419044.

The previous prime is 2140528099. The next prime is 2140528129. The reversal of 2140528121 is 1218250412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2140528121 - 2⁶ = 2140528057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140528129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2553911 + ... + 2554748.

It is an arithmetic number, because the mean of its divisors is an integer number (536409300).

Almost surely, 2^2140528121 is an apocalyptic number.

It is an amenable number.

2140528121 is a deficient number, since it is larger than the sum of its proper divisors (5109079).

2140528121 is an equidigital number, since it uses as much as digits as its factorization.

2140528121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109078.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 2140528121 is about 46265.8418382288. The cubic root of 2140528121 is about 1288.7647412597.

Adding to 2140528121 its reverse (1218250412), we get a palindrome (3358778533).

The spelling of 2140528121 in words is "two billion, one hundred forty million, five hundred twenty-eight thousand, one hundred twenty-one".