1290006 has 20 divisors (see below), whose sum is σ = 2890932. Its totient is φ = 429948.

The previous prime is 1289971. The next prime is 1290013. The reversal of 1290006 is 6000921.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3820 + ... + 4143.

2^1290006 is an apocalyptic number.

1290006 is an abundant number, since it is smaller than the sum of its proper divisors (1600926).

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

1290006 is an equidigital number, since it uses as much as digits as its factorization.

1290006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7977 (or 7968 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1290006 is about 1135.7843105097. The cubic root of 1290006 is about 108.8588921182.

Adding to 1290006 its reverse (6000921), we get a palindrome (7290927).

Subtracting 1290006 from its reverse (6000921), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 1290006 in words is "one million, two hundred ninety thousand, six".