1945123 has 4 divisors (see below), whose sum is σ = 2059560. Its totient is φ = 1830688.

The previous prime is 1945121. The next prime is 1945129. The reversal of 1945123 is 3215491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3215491 = 29 ⋅110879.

It is a cyclic number.

It is not a de Polignac number, because 1945123 - 2¹ = 1945121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1945121) 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, 57193 + ... + 57226.

It is an arithmetic number, because the mean of its divisors is an integer number (514890).

2^1945123 is an apocalyptic number.

1945123 is a deficient number, since it is larger than the sum of its proper divisors (114437).

1945123 is a wasteful number, since it uses less digits than its factorization.

1945123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114436.

The product of its digits is 1080, while the sum is 25.

The square root of 1945123 is about 1394.6766650375. The cubic root of 1945123 is about 124.8290570012.

The spelling of 1945123 in words is "one million, nine hundred forty-five thousand, one hundred twenty-three".