2542012521 has 4 divisors (see below), whose sum is σ = 3389350032. Its totient is φ = 1694675012.

The previous prime is 2542012519. The next prime is 2542012537. The reversal of 2542012521 is 1252102452.

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 2542012521 - 2¹ = 2542012519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2542012491 and 2542012500.

It is not an unprimeable number, because it can be changed into a prime (2542019521) 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, 423668751 + ... + 423668756.

It is an arithmetic number, because the mean of its divisors is an integer number (847337508).

Almost surely, 2^2542012521 is an apocalyptic number.

It is an amenable number.

2542012521 is a deficient number, since it is larger than the sum of its proper divisors (847337511).

2542012521 is an equidigital number, since it uses as much as digits as its factorization.

2542012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847337510.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2542012521 is about 50418.3748349746. The cubic root of 2542012521 is about 1364.7692491907.

Adding to 2542012521 its reverse (1252102452), we get a palindrome (3794114973).

The spelling of 2542012521 in words is "two billion, five hundred forty-two million, twelve thousand, five hundred twenty-one".