2564542342 has 4 divisors (see below), whose sum is σ = 3846813516. Its totient is φ = 1282271170.

The previous prime is 2564542303. The next prime is 2564542349. The reversal of 2564542342 is 2432454652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564542349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641135584 + ... + 641135587.

It is an arithmetic number, because the mean of its divisors is an integer number (961703379).

Almost surely, 2^2564542342 is an apocalyptic number.

2564542342 is a deficient number, since it is larger than the sum of its proper divisors (1282271174).

2564542342 is a wasteful number, since it uses less digits than its factorization.

2564542342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282271173.

The product of its digits is 230400, while the sum is 37.

The square root of 2564542342 is about 50641.3106267995. The cubic root of 2564542342 is about 1368.7893725613.

Adding to 2564542342 its reverse (2432454652), we get a palindrome (4996996994).

The spelling of 2564542342 in words is "two billion, five hundred sixty-four million, five hundred forty-two thousand, three hundred forty-two".