1258166 has 32 divisors (see below), whose sum is σ = 2408448. Its totient is φ = 479520.

The previous prime is 1258163. The next prime is 1258171. The reversal of 1258166 is 6618521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258163) 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 15 ways as a sum of consecutive naturals, for example, 5531 + ... + 5753.

It is an arithmetic number, because the mean of its divisors is an integer number (75264).

2^1258166 is an apocalyptic number.

1258166 is a deficient number, since it is larger than the sum of its proper divisors (1150282).

1258166 is a wasteful number, since it uses less digits than its factorization.

1258166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

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

The square root of 1258166 is about 1121.6799900150. The cubic root of 1258166 is about 107.9558003863.

The spelling of 1258166 in words is "one million, two hundred fifty-eight thousand, one hundred sixty-six".