1290433 has 2 divisors, whose sum is σ = 1290434. Its totient is φ = 1290432.

The previous prime is 1290431. The next prime is 1290439. The reversal of 1290433 is 3340921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 97969 = 1092^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290433 - 2¹ = 1290431 is a prime.

Together with 1290431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1290431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645216 + 645217.

It is an arithmetic number, because the mean of its divisors is an integer number (645217).

2^1290433 is an apocalyptic number.

It is an amenable number.

1290433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290433 is an equidigital number, since it uses as much as digits as its factorization.

1290433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1290433 is about 1135.9722707883. The cubic root of 1290433 is about 108.8709017831.

The spelling of 1290433 in words is "one million, two hundred ninety thousand, four hundred thirty-three".