1040004 has 36 divisors (see below), whose sum is σ = 3005184. Its totient is φ = 297072.

The previous prime is 1039999. The next prime is 1040021. The reversal of 1040004 is 4000401.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1812 + ... + 2315.

2^1040004 is an apocalyptic number.

1040004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1040004 is an abundant number, since it is smaller than the sum of its proper divisors (1965180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1040004 is a wasteful number, since it uses less digits than its factorization.

1040004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144 (or 4139 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1040004 is about 1019.8058638780. The cubic root of 1040004 is about 101.3160702741.

Adding to 1040004 its reverse (4000401), we get a palindrome (5040405).

The spelling of 1040004 in words is "one million, forty thousand, four".