1001290 has 8 divisors (see below), whose sum is σ = 1802340. Its totient is φ = 400512.

The previous prime is 1001279. The next prime is 1001291. The reversal of 1001290 is 921001.

It can be written as a sum of positive squares in 2 ways, for example, as 958441 + 42849 = 979^2 + 207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1001290.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001291) 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 in 3 ways as a sum of consecutive naturals, for example, 50055 + ... + 50074.

2^1001290 is an apocalyptic number.

1001290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001290 is a deficient number, since it is larger than the sum of its proper divisors (801050).

1001290 is a wasteful number, since it uses less digits than its factorization.

1001290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100136.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1001290 is about 1000.6447921216. The cubic root of 1001290 is about 100.0429815232.

Adding to 1001290 its reverse (921001), we get a palindrome (1922291).

The spelling of 1001290 in words is "one million, one thousand, two hundred ninety".