1564334242 has 4 divisors (see below), whose sum is σ = 2346501366. Its totient is φ = 782167120.

The previous prime is 1564334231. The next prime is 1564334333. The reversal of 1564334242 is 2424334651.

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

It can be written as a sum of positive squares in only one way, i.e., 1373369481 + 190964761 = 37059^2 + 13819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1564334198 and 1564334207.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 391083559 + ... + 391083562.

Almost surely, 2^1564334242 is an apocalyptic number.

1564334242 is a deficient number, since it is larger than the sum of its proper divisors (782167124).

1564334242 is an equidigital number, since it uses as much as digits as its factorization.

1564334242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782167123.

The product of its digits is 69120, while the sum is 34.

The square root of 1564334242 is about 39551.6654769429. The cubic root of 1564334242 is about 1160.8511000227.

Adding to 1564334242 its reverse (2424334651), we get a palindrome (3988668893).

The spelling of 1564334242 in words is "one billion, five hundred sixty-four million, three hundred thirty-four thousand, two hundred forty-two".