1530020642 has 16 divisors (see below), whose sum is σ = 2339963640. Its totient is φ = 750052992.

The previous prime is 1530020641. The next prime is 1530020659. The reversal of 1530020642 is 2460200351.

It can be written as a sum of positive squares in 4 ways, for example, as 1152534601 + 377486041 = 33949^2 + 19429^2 .

It is not an unprimeable number, because it can be changed into a prime (1530020641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179534 + ... + 187862.

Almost surely, 2^1530020642 is an apocalyptic number.

1530020642 is a deficient number, since it is larger than the sum of its proper divisors (809942998).

1530020642 is a wasteful number, since it uses less digits than its factorization.

1530020642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10117.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1530020642 is about 39115.4782918476. The cubic root of 1530020642 is about 1152.3005345533.

Adding to 1530020642 its reverse (2460200351), we get a palindrome (3990220993).

The spelling of 1530020642 in words is "one billion, five hundred thirty million, twenty thousand, six hundred forty-two".