1258490 has 16 divisors (see below), whose sum is σ = 2278152. Its totient is φ = 500544.

The previous prime is 1258487. The next prime is 1258511. The reversal of 1258490 is 948521.

It can be written as a sum of positive squares in 4 ways, for example, as 797449 + 461041 = 893^2 + 679^2 .

It is a Curzon number.

It is an unprimeable number.

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, 2972 + ... + 3368.

2^1258490 is an apocalyptic number.

1258490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1258490 is a deficient number, since it is larger than the sum of its proper divisors (1019662).

1258490 is a wasteful number, since it uses less digits than its factorization.

1258490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

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

The square root of 1258490 is about 1121.8244069372. The cubic root of 1258490 is about 107.9650664337.

The spelling of 1258490 in words is "one million, two hundred fifty-eight thousand, four hundred ninety".