1290004 has 6 divisors (see below), whose sum is σ = 2257514. Its totient is φ = 645000.

The previous prime is 1289971. The next prime is 1290013. The reversal of 1290004 is 4000921.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 425104 = 930^2 + 652^2 .

It is a super-2 number, since 2×1290004² = 3328220640032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1290004.

It is a congruent number.

It is an unprimeable number.

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, 161247 + ... + 161254.

2^1290004 is an apocalyptic number.

It is an amenable number.

1290004 is a deficient number, since it is larger than the sum of its proper divisors (967510).

1290004 is a wasteful number, since it uses less digits than its factorization.

1290004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322505 (or 322503 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1290004 is about 1135.7834300605. The cubic root of 1290004 is about 108.8588358607.

Adding to 1290004 its reverse (4000921), we get a palindrome (5290925).

The spelling of 1290004 in words is "one million, two hundred ninety thousand, four".