2542549123 has 4 divisors (see below), whose sum is σ = 2544233328. Its totient is φ = 2540864920.

The previous prime is 2542549111. The next prime is 2542549147. The reversal of 2542549123 is 3219452452.

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 2542549123 - 2²¹ = 2540451971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542549183) 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, 839836 + ... + 842857.

It is an arithmetic number, because the mean of its divisors is an integer number (636058332).

Almost surely, 2^2542549123 is an apocalyptic number.

2542549123 is a deficient number, since it is larger than the sum of its proper divisors (1684205).

2542549123 is a wasteful number, since it uses less digits than its factorization.

2542549123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684204.

The product of its digits is 86400, while the sum is 37.

The square root of 2542549123 is about 50423.6960466009. The cubic root of 2542549123 is about 1364.8652736829.

The spelling of 2542549123 in words is "two billion, five hundred forty-two million, five hundred forty-nine thousand, one hundred twenty-three".