1145023 has 6 divisors (see below), whose sum is σ = 1258712. Its totient is φ = 1040820.

The previous prime is 1145021. The next prime is 1145057. The reversal of 1145023 is 3205411.

It is not a de Polignac number, because 1145023 - 2¹ = 1145021 is a prime.

It is a super-2 number, since 2×1145023² = 2622155341058, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1144988 and 1145006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145021) 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, 4611 + ... + 4852.

2^1145023 is an apocalyptic number.

1145023 is a deficient number, since it is larger than the sum of its proper divisors (113689).

1145023 is an equidigital number, since it uses as much as digits as its factorization.

1145023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485 (or 9474 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1145023 is about 1070.0574750919. The cubic root of 1145023 is about 104.6175961487.

The spelling of 1145023 in words is "one million, one hundred forty-five thousand, twenty-three".