3420240123 has 4 divisors (see below), whose sum is σ = 4560320168. Its totient is φ = 2280160080.

The previous prime is 3420240107. The next prime is 3420240143. The reversal of 3420240123 is 3210420243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3210420243 = 3 ⋅1070140081.

It is not a de Polignac number, because 3420240123 - 2⁴ = 3420240107 is a prime.

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 3420240123.

It is not an unprimeable number, because it can be changed into a prime (3420240143) 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, 570040018 + ... + 570040023.

It is an arithmetic number, because the mean of its divisors is an integer number (1140080042).

Almost surely, 2^3420240123 is an apocalyptic number.

3420240123 is a deficient number, since it is larger than the sum of its proper divisors (1140080045).

3420240123 is a wasteful number, since it uses less digits than its factorization.

3420240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140080044.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 3420240123 is about 58482.8190411509. The cubic root of 3420240123 is about 1506.6725147973.

Adding to 3420240123 its reverse (3210420243), we get a palindrome (6630660366).

The spelling of 3420240123 in words is "three billion, four hundred twenty million, two hundred forty thousand, one hundred twenty-three".