1258998 has 16 divisors (see below), whose sum is σ = 2711856. Its totient is φ = 387360.

The previous prime is 1258993. The next prime is 1259017. The reversal of 1258998 is 8998521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258993) 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, 7993 + ... + 8148.

It is an arithmetic number, because the mean of its divisors is an integer number (169491).

2^1258998 is an apocalyptic number.

1258998 is an abundant number, since it is smaller than the sum of its proper divisors (1452858).

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

1258998 is a wasteful number, since it uses less digits than its factorization.

1258998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16159.

The product of its digits is 51840, while the sum is 42.

The square root of 1258998 is about 1122.0508009890. The cubic root of 1258998 is about 107.9795914798.

The spelling of 1258998 in words is "one million, two hundred fifty-eight thousand, nine hundred ninety-eight".