2542531043 has 4 divisors (see below), whose sum is σ = 2738110368. Its totient is φ = 2346951720.

The previous prime is 2542531039. The next prime is 2542531049. The reversal of 2542531043 is 3401352452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2542531043 - 2² = 2542531039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2542530997 and 2542531015.

It is not an unprimeable number, because it can be changed into a prime (2542531049) 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 3 ways as a sum of consecutive naturals, for example, 97789643 + ... + 97789668.

It is an arithmetic number, because the mean of its divisors is an integer number (684527592).

Almost surely, 2^2542531043 is an apocalyptic number.

2542531043 is a deficient number, since it is larger than the sum of its proper divisors (195579325).

2542531043 is a wasteful number, since it uses less digits than its factorization.

2542531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195579324.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2542531043 is about 50423.5167654935. The cubic root of 2542531043 is about 1364.8620385015.

Adding to 2542531043 its reverse (3401352452), we get a palindrome (5943883495).

The spelling of 2542531043 in words is "two billion, five hundred forty-two million, five hundred thirty-one thousand, forty-three".