1290073 has 8 divisors (see below), whose sum is σ = 1332936. Its totient is φ = 1248000.

The previous prime is 1290049. The next prime is 1290077. The reversal of 1290073 is 3700921.

It can be written as a sum of positive squares in 4 ways, for example, as 831744 + 458329 = 912^2 + 677^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1290073 - 2¹⁷ = 1159001 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1290077) 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 in 7 ways as a sum of consecutive naturals, for example, 5233 + ... + 5473.

It is an arithmetic number, because the mean of its divisors is an integer number (166617).

2^1290073 is an apocalyptic number.

It is an amenable number.

1290073 is a deficient number, since it is larger than the sum of its proper divisors (42863).

1290073 is a wasteful number, since it uses less digits than its factorization.

1290073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1290073 is about 1135.8138051635. The cubic root of 1290073 is about 108.8607767140.

Adding to 1290073 its reverse (3700921), we get a palindrome (4990994).

The spelling of 1290073 in words is "one million, two hundred ninety thousand, seventy-three".