1928042 has 4 divisors (see below), whose sum is σ = 2892066. Its totient is φ = 964020.

The previous prime is 1928041. The next prime is 1928071. The reversal of 1928042 is 2408291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2408291 = 263 ⋅9157.

It can be written as a sum of positive squares in only one way, i.e., 1819801 + 108241 = 1349^2 + 329^2 .

It is not an unprimeable number, because it can be changed into a prime (1928041) 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 as a sum of consecutive naturals, namely, 482009 + ... + 482012.

2^1928042 is an apocalyptic number.

1928042 is a deficient number, since it is larger than the sum of its proper divisors (964024).

1928042 is an equidigital number, since it uses as much as digits as its factorization.

1928042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964023.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1928042 is about 1388.5395205035. The cubic root of 1928042 is about 124.4625888250.

Subtracting 1928042 from its reverse (2408291), we obtain a square (480249 = 693²).

The spelling of 1928042 in words is "one million, nine hundred twenty-eight thousand, forty-two".