1145138 has 8 divisors (see below), whose sum is σ = 1735020. Its totient is φ = 566800.

The previous prime is 1145129. The next prime is 1145141. The reversal of 1145138 is 8315411.

It can be written as a sum of positive squares in 2 ways, for example, as 1117249 + 27889 = 1057^2 + 167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1145138² = 2622682078088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2633 + ... + 3036.

2^1145138 is an apocalyptic number.

1145138 is a deficient number, since it is larger than the sum of its proper divisors (589882).

1145138 is a wasteful number, since it uses less digits than its factorization.

1145138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772.

The product of its digits is 480, while the sum is 23.

The square root of 1145138 is about 1070.1112091741. Note that the first 3 decimals coincide. The cubic root of 1145138 is about 104.6210984425.

The spelling of 1145138 in words is "one million, one hundred forty-five thousand, one hundred thirty-eight".