2140123 has 4 divisors (see below), whose sum is σ = 2154448. Its totient is φ = 2125800.

The previous prime is 2140121. The next prime is 2140129. The reversal of 2140123 is 3210412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2140123 - 2¹ = 2140121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140121) 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, 6936 + ... + 7237.

It is an arithmetic number, because the mean of its divisors is an integer number (538612).

2^2140123 is an apocalyptic number.

2140123 is a deficient number, since it is larger than the sum of its proper divisors (14325).

2140123 is a wasteful number, since it uses less digits than its factorization.

2140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14324.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2140123 is about 1462.9159237632. The cubic root of 2140123 is about 128.8683431325.

Adding to 2140123 its reverse (3210412), we get a palindrome (5350535).

The spelling of 2140123 in words is "two million, one hundred forty thousand, one hundred twenty-three".