1258158 has 24 divisors (see below), whose sum is σ = 2767464. Its totient is φ = 381040.

The previous prime is 1258151. The next prime is 1258163. The reversal of 1258158 is 8518521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258151) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 141 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (115311).

2^1258158 is an apocalyptic number.

1258158 is an abundant number, since it is smaller than the sum of its proper divisors (1509306).

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

1258158 is a wasteful number, since it uses less digits than its factorization.

1258158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1749 counting only the distinct ones).

The product of its digits is 3200, while the sum is 30.

The square root of 1258158 is about 1121.6764239298. The cubic root of 1258158 is about 107.9555715749.

The spelling of 1258158 in words is "one million, two hundred fifty-eight thousand, one hundred fifty-eight".