1230842 has 8 divisors (see below), whose sum is σ = 1896276. Its totient is φ = 598752.

The previous prime is 1230829. The next prime is 1230863. The reversal of 1230842 is 2480321.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 961 = 1109^2 + 31^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8243 + ... + 8390.

2^1230842 is an apocalyptic number.

1230842 is a deficient number, since it is larger than the sum of its proper divisors (665434).

1230842 is a wasteful number, since it uses less digits than its factorization.

1230842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16672.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1230842 is about 1109.4331886148. The cubic root of 1230842 is about 107.1685699981.

The spelling of 1230842 in words is "one million, two hundred thirty thousand, eight hundred forty-two".