1864042 has 4 divisors (see below), whose sum is σ = 2796066. Its totient is φ = 932020.

The previous prime is 1864039. The next prime is 1864043. The reversal of 1864042 is 2404681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1846881 + 17161 = 1359^2 + 131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1863998 and 1864016.

It is not an unprimeable number, because it can be changed into a prime (1864043) 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 as a sum of consecutive naturals, namely, 466009 + ... + 466012.

2^1864042 is an apocalyptic number.

1864042 is a deficient number, since it is larger than the sum of its proper divisors (932024).

1864042 is an equidigital number, since it uses as much as digits as its factorization.

1864042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932023.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1864042 is about 1365.2992346002. The cubic root of 1864042 is about 123.0699142042.

The spelling of 1864042 in words is "one million, eight hundred sixty-four thousand, forty-two".