1530642 has 8 divisors (see below), whose sum is σ = 3061296. Its totient is φ = 510212.

The previous prime is 1530631. The next prime is 1530647. The reversal of 1530642 is 2460351.

It is a happy number.

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

1530642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1530647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127548 + ... + 127559.

It is an arithmetic number, because the mean of its divisors is an integer number (382662).

2^1530642 is an apocalyptic number.

1530642 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.

1530642 is a wasteful number, since it uses less digits than its factorization.

1530642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255112.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1530642 is about 1237.1911735864. The cubic root of 1530642 is about 115.2456500696.

Adding to 1530642 its reverse (2460351), we get a palindrome (3990993).

The spelling of 1530642 in words is "one million, five hundred thirty thousand, six hundred forty-two".