1842123 has 4 divisors (see below), whose sum is σ = 2456168. Its totient is φ = 1228080.

The previous prime is 1842101. The next prime is 1842131. The reversal of 1842123 is 3212481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212481 = 3 ⋅1070827.

It is not a de Polignac number, because 1842123 - 2¹⁴ = 1825739 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1842123.

It is not an unprimeable number, because it can be changed into a prime (1842133) 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, 307018 + ... + 307023.

It is an arithmetic number, because the mean of its divisors is an integer number (614042).

2^1842123 is an apocalyptic number.

1842123 is a deficient number, since it is larger than the sum of its proper divisors (614045).

1842123 is an equidigital number, since it uses as much as digits as its factorization.

1842123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614044.

The product of its digits is 384, while the sum is 21.

The square root of 1842123 is about 1357.2483192106. The cubic root of 1842123 is about 122.5856238804.

The spelling of 1842123 in words is "one million, eight hundred forty-two thousand, one hundred twenty-three".