1245986 has 16 divisors (see below), whose sum is σ = 2172480. Its totient is φ = 524880.

The previous prime is 1245973. The next prime is 1246013. The reversal of 1245986 is 6895421.

It is a super-2 number, since 2×1245986² = 3104962224392, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 7 ways as a sum of consecutive naturals, for example, 125 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (135780).

2^1245986 is an apocalyptic number.

1245986 is a deficient number, since it is larger than the sum of its proper divisors (926494).

1245986 is a wasteful number, since it uses less digits than its factorization.

1245986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 17280, while the sum is 35.

The square root of 1245986 is about 1116.2374299404. The cubic root of 1245986 is about 107.6063055135.

The spelling of 1245986 in words is "one million, two hundred forty-five thousand, nine hundred eighty-six".