2546420243 has 4 divisors (see below), whose sum is σ = 2551649520. Its totient is φ = 2541190968.

The previous prime is 2546420203. The next prime is 2546420249. The reversal of 2546420243 is 3420246452.

It is a happy number.

2546420243 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.

It is a cyclic number.

It is not a de Polignac number, because 2546420243 - 2¹⁴ = 2546403859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2546420249) 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, 2613908 + ... + 2614881.

It is an arithmetic number, because the mean of its divisors is an integer number (637912380).

Almost surely, 2^2546420243 is an apocalyptic number.

2546420243 is a deficient number, since it is larger than the sum of its proper divisors (5229277).

2546420243 is an equidigital number, since it uses as much as digits as its factorization.

2546420243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229276.

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 2546420243 is about 50462.0673674791. The cubic root of 2546420243 is about 1365.5576074788.

Adding to 2546420243 its reverse (3420246452), we get a palindrome (5966666695).

The spelling of 2546420243 in words is "two billion, five hundred forty-six million, four hundred twenty thousand, two hundred forty-three".