1623123 has 6 divisors (see below), whose sum is σ = 2344524. Its totient is φ = 1082076.

The previous prime is 1623107. The next prime is 1623137. The reversal of 1623123 is 3213261.

It is not a de Polignac number, because 1623123 - 2⁴ = 1623107 is a prime.

1623123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1623096 and 1623105.

It is not an unprimeable number, because it can be changed into a prime (1623163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90165 + ... + 90182.

It is an arithmetic number, because the mean of its divisors is an integer number (390754).

2^1623123 is an apocalyptic number.

1623123 is a deficient number, since it is larger than the sum of its proper divisors (721401).

1623123 is a wasteful number, since it uses less digits than its factorization.

1623123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180353 (or 180350 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1623123 is about 1274.0184457063. The cubic root of 1623123 is about 117.5214507389.

Adding to 1623123 its reverse (3213261), we get a palindrome (4836384).

The spelling of 1623123 in words is "one million, six hundred twenty-three thousand, one hundred twenty-three".