1023842 has 8 divisors (see below), whose sum is σ = 1626156. Its totient is φ = 481792.

The previous prime is 1023839. The next prime is 1023851. The reversal of 1023842 is 2483201.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 160801 = 929^2 + 401^2 .

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

It is a congruent number.

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, 15023 + ... + 15090.

2^1023842 is an apocalyptic number.

1023842 is a deficient number, since it is larger than the sum of its proper divisors (602314).

1023842 is a wasteful number, since it uses less digits than its factorization.

1023842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30132.

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

The square root of 1023842 is about 1011.8507795125. The cubic root of 1023842 is about 100.7884996748.

The spelling of 1023842 in words is "one million, twenty-three thousand, eight hundred forty-two".