4212040123 has 4 divisors (see below), whose sum is σ = 4214380648. Its totient is φ = 4209699600.

The previous prime is 4212040121. The next prime is 4212040141. The reversal of 4212040123 is 3210402124.

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 4212040123 - 2¹ = 4212040121 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 4212040123.

It is not an unprimeable number, because it can be changed into a prime (4212040121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167561 + ... + 1171162.

It is an arithmetic number, because the mean of its divisors is an integer number (1053595162).

Almost surely, 2^4212040123 is an apocalyptic number.

4212040123 is a deficient number, since it is larger than the sum of its proper divisors (2340525).

4212040123 is a wasteful number, since it uses less digits than its factorization.

4212040123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340524.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4212040123 is about 64900.2320720042. The cubic root of 4212040123 is about 1614.9689115928.

Adding to 4212040123 its reverse (3210402124), we get a palindrome (7422442247).

The spelling of 4212040123 in words is "four billion, two hundred twelve million, forty thousand, one hundred twenty-three".