2542533121 has 4 divisors (see below), whose sum is σ = 2542647744. Its totient is φ = 2542418500.

The previous prime is 2542533113. The next prime is 2542533143. The reversal of 2542533121 is 1213352452.

2542533121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2542533121 - 2³ = 2542533113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2542533121.

It is not an unprimeable number, because it can be changed into a prime (2542533151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12205 + ... + 72346.

It is an arithmetic number, because the mean of its divisors is an integer number (635661936).

Almost surely, 2^2542533121 is an apocalyptic number.

It is an amenable number.

2542533121 is a deficient number, since it is larger than the sum of its proper divisors (114623).

2542533121 is an equidigital number, since it uses as much as digits as its factorization.

2542533121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114622.

The product of its digits is 7200, while the sum is 28.

The square root of 2542533121 is about 50423.5373709541. The cubic root of 2542533121 is about 1364.8624103334.

Adding to 2542533121 its reverse (1213352452), we get a palindrome (3755885573).

The spelling of 2542533121 in words is "two billion, five hundred forty-two million, five hundred thirty-three thousand, one hundred twenty-one".