1145709 has 6 divisors (see below), whose sum is σ = 1654926. Its totient is φ = 763800.

The previous prime is 1145693. The next prime is 1145713. The reversal of 1145709 is 9075411.

It can be written as a sum of positive squares in only one way, i.e., 956484 + 189225 = 978^2 + 435^2 .

It is not a de Polignac number, because 1145709 - 2⁴ = 1145693 is a prime.

It is a super-2 number, since 2×1145709² = 2625298225362, which contains 22 as substring.

1145709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63642 + ... + 63659.

It is an arithmetic number, because the mean of its divisors is an integer number (275821).

2^1145709 is an apocalyptic number.

It is an amenable number.

1145709 is a deficient number, since it is larger than the sum of its proper divisors (509217).

1145709 is a wasteful number, since it uses less digits than its factorization.

1145709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127307 (or 127304 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1145709 is about 1070.3779706253. The cubic root of 1145709 is about 104.6384846209.

The spelling of 1145709 in words is "one million, one hundred forty-five thousand, seven hundred nine".