1145290 has 16 divisors (see below), whose sum is σ = 2183112. Its totient is φ = 431104.

The previous prime is 1145281. The next prime is 1145293. The reversal of 1145290 is 925411.

It can be written as a sum of positive squares in 4 ways, for example, as 1038361 + 106929 = 1019^2 + 327^2 .

It is not an unprimeable number, because it can be changed into a prime (1145293) 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 7 ways as a sum of consecutive naturals, for example, 3199 + ... + 3538.

2^1145290 is an apocalyptic number.

1145290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145290 is a deficient number, since it is larger than the sum of its proper divisors (1037822).

1145290 is a wasteful number, since it uses less digits than its factorization.

1145290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1145290 is about 1070.1822274734. The cubic root of 1145290 is about 104.6257272014.

The spelling of 1145290 in words is "one million, one hundred forty-five thousand, two hundred ninety".