1023123 has 4 divisors (see below), whose sum is σ = 1364168. Its totient is φ = 682080.

The previous prime is 1023107. The next prime is 1023133. The reversal of 1023123 is 3213201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3213201 = 3 ⋅1071067.

It is not a de Polignac number, because 1023123 - 2⁴ = 1023107 is a prime.

It is a D-number.

It is a Duffinian number.

1023123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1023099 and 1023108.

It is not an unprimeable number, because it can be changed into a prime (1023133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170518 + ... + 170523.

It is an arithmetic number, because the mean of its divisors is an integer number (341042).

2^1023123 is an apocalyptic number.

1023123 is a deficient number, since it is larger than the sum of its proper divisors (341045).

1023123 is an equidigital number, since it uses as much as digits as its factorization.

1023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341044.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1023123 is about 1011.4954275725. The cubic root of 1023123 is about 100.7649010136.

Adding to 1023123 its reverse (3213201), we get a palindrome (4236324).

It can be divided in two parts, 102312 and 3, that multiplied together give a triangular number (306936 = T₇₈₃).

The spelling of 1023123 in words is "one million, twenty-three thousand, one hundred twenty-three".