1023404 has 6 divisors (see below), whose sum is σ = 1790964. Its totient is φ = 511700.

The previous prime is 1023391. The next prime is 1023409. The reversal of 1023404 is 4043201.

It is not an unprimeable number, because it can be changed into a prime (1023409) 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, 127922 + ... + 127929.

It is an arithmetic number, because the mean of its divisors is an integer number (298494).

2^1023404 is an apocalyptic number.

It is an amenable number.

1023404 is a deficient number, since it is larger than the sum of its proper divisors (767560).

1023404 is a wasteful number, since it uses less digits than its factorization.

1023404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255855 (or 255853 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1023404 is about 1011.6343212841. The cubic root of 1023404 is about 100.7741251719.

Adding to 1023404 its reverse (4043201), we get a palindrome (5066605).

The spelling of 1023404 in words is "one million, twenty-three thousand, four hundred four".