1290458 has 8 divisors (see below), whose sum is σ = 2084628. Its totient is φ = 595584.

The previous prime is 1290439. The next prime is 1290463. The reversal of 1290458 is 8540921.

It can be written as a sum of positive squares in 2 ways, for example, as 1151329 + 139129 = 1073^2 + 373^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290458.

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 in 3 ways as a sum of consecutive naturals, for example, 24791 + ... + 24842.

2^1290458 is an apocalyptic number.

1290458 is a deficient number, since it is larger than the sum of its proper divisors (794170).

1290458 is a wasteful number, since it uses less digits than its factorization.

1290458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49648.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1290458 is about 1135.9832745248. The cubic root of 1290458 is about 108.8716048430.

The spelling of 1290458 in words is "one million, two hundred ninety thousand, four hundred fifty-eight".