1564252842 has 8 divisors (see below), whose sum is σ = 3128505696. Its totient is φ = 521417612.

The previous prime is 1564252817. The next prime is 1564252847. The reversal of 1564252842 is 2482524651.

It is a sphenic number, since it is the product of 3 distinct primes.

1564252842 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1564252842.

It is not an unprimeable number, because it can be changed into a prime (1564252847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130354398 + ... + 130354409.

It is an arithmetic number, because the mean of its divisors is an integer number (391063212).

Almost surely, 2^1564252842 is an apocalyptic number.

1564252842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1564252842 is a wasteful number, since it uses less digits than its factorization.

1564252842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260708812.

The product of its digits is 153600, while the sum is 39.

The square root of 1564252842 is about 39550.6364297719. The cubic root of 1564252842 is about 1160.8309647438.

Subtracting 1564252842 from its reverse (2482524651), we obtain a square (918271809 = 30303²).

The spelling of 1564252842 in words is "one billion, five hundred sixty-four million, two hundred fifty-two thousand, eight hundred forty-two".