1542320513 has 2 divisors, whose sum is σ = 1542320514. Its totient is φ = 1542320512.

The previous prime is 1542320501. The next prime is 1542320581. The reversal of 1542320513 is 3150232451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 816987889 + 725332624 = 28583^2 + 26932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542320513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1542320113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771160256 + 771160257.

It is an arithmetic number, because the mean of its divisors is an integer number (771160257).

Almost surely, 2^1542320513 is an apocalyptic number.

It is an amenable number.

1542320513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542320513 is an equidigital number, since it uses as much as digits as its factorization.

1542320513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1542320513 is about 39272.3886846726. The cubic root of 1542320513 is about 1155.3800871722.

Adding to 1542320513 its reverse (3150232451), we get a palindrome (4692552964).

The spelling of 1542320513 in words is "one billion, five hundred forty-two million, three hundred twenty thousand, five hundred thirteen".