1145723 has 2 divisors, whose sum is σ = 1145724. Its totient is φ = 1145722.

The previous prime is 1145713. The next prime is 1145741. The reversal of 1145723 is 3275411.

It is a weak prime.

It is an emirp because it is prime and its reverse (3275411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145723 - 2⁶ = 1145659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572861 + 572862.

It is an arithmetic number, because the mean of its divisors is an integer number (572862).

2^1145723 is an apocalyptic number.

1145723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145723 is an equidigital number, since it uses as much as digits as its factorization.

1145723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 1145723 is about 1070.3845103513. The cubic root of 1145723 is about 104.6389108294.

The spelling of 1145723 in words is "one million, one hundred forty-five thousand, seven hundred twenty-three".