1245858 has 8 divisors (see below), whose sum is σ = 2491728. Its totient is φ = 415284.

The previous prime is 1245847. The next prime is 1245863. The reversal of 1245858 is 8585421.

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

1245858 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103816 + ... + 103827.

It is an arithmetic number, because the mean of its divisors is an integer number (311466).

2^1245858 is an apocalyptic number.

1245858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245858 is a wasteful number, since it uses less digits than its factorization.

1245858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207648.

The product of its digits is 12800, while the sum is 33.

The square root of 1245858 is about 1116.1800929957. The cubic root of 1245858 is about 107.6026205928.

The spelling of 1245858 in words is "one million, two hundred forty-five thousand, eight hundred fifty-eight".