1145178 has 20 divisors (see below), whose sum is σ = 2566410. Its totient is φ = 381672.

The previous prime is 1145173. The next prime is 1145189. The reversal of 1145178 is 8715411.

It can be written as a sum of positive squares in only one way, i.e., 1034289 + 110889 = 1017^2 + 333^2 .

It is a super-2 number, since 2×1145178² = 2622865303368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1145173) 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 9 ways as a sum of consecutive naturals, for example, 3373 + ... + 3696.

2^1145178 is an apocalyptic number.

1145178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1145178 is an abundant number, since it is smaller than the sum of its proper divisors (1421232).

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

1145178 is an equidigital number, since it uses as much as digits as its factorization.

1145178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083 (or 7074 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 1145178 is about 1070.1298986572. The cubic root of 1145178 is about 104.6223165766.

The spelling of 1145178 in words is "one million, one hundred forty-five thousand, one hundred seventy-eight".