2542644723 has 4 divisors (see below), whose sum is σ = 3390192968. Its totient is φ = 1695096480.

The previous prime is 2542644719. The next prime is 2542644743. The reversal of 2542644723 is 3274462452.

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

It is not a de Polignac number, because 2542644723 - 2² = 2542644719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542644703) 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, 423774118 + ... + 423774123.

It is an arithmetic number, because the mean of its divisors is an integer number (847548242).

Almost surely, 2^2542644723 is an apocalyptic number.

2542644723 is a deficient number, since it is larger than the sum of its proper divisors (847548245).

2542644723 is an equidigital number, since it uses as much as digits as its factorization.

2542644723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847548244.

The product of its digits is 322560, while the sum is 39.

The square root of 2542644723 is about 50424.6440046928. The cubic root of 2542644723 is about 1364.8823798073.

The spelling of 2542644723 in words is "two billion, five hundred forty-two million, six hundred forty-four thousand, seven hundred twenty-three".