1049842 has 4 divisors (see below), whose sum is σ = 1574766. Its totient is φ = 524920.

The previous prime is 1049837. The next prime is 1049843. The reversal of 1049842 is 2489401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2489401 = 317 ⋅7853.

It can be written as a sum of positive squares in only one way, i.e., 848241 + 201601 = 921^2 + 449^2 .

It is a super-2 number, since 2×1049842² = 2204336449928, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 0 + 4² + 9³ + 8 + 4¹⁰ + 2⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 1049842.

It is not an unprimeable number, because it can be changed into a prime (1049843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262459 + ... + 262462.

2^1049842 is an apocalyptic number.

1049842 is a deficient number, since it is larger than the sum of its proper divisors (524924).

1049842 is an equidigital number, since it uses as much as digits as its factorization.

1049842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524923.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1049842 is about 1024.6179775897. The cubic root of 1049842 is about 101.6345373107.

It can be divided in two parts, 1049 and 842, that added together give a triangular number (1891 = T₆₁).

The spelling of 1049842 in words is "one million, forty-nine thousand, eight hundred forty-two".