3120123042 has 24 divisors (see below), whose sum is σ = 6925152780. Its totient is φ = 1014673920.

The previous prime is 3120123037. The next prime is 3120123047. The reversal of 3120123042 is 2403210213.

It is an interprime number because it is at equal distance from previous prime (3120123037) and next prime (3120123047).

It can be written as a sum of positive squares in 2 ways, for example, as 3029511681 + 90611361 = 55041^2 + 9519^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3120123047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2113167 + ... + 2114642.

Almost surely, 2^3120123042 is an apocalyptic number.

3120123042 is an abundant number, since it is smaller than the sum of its proper divisors (3805029738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3120123042 is a wasteful number, since it uses less digits than its factorization.

3120123042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227858 (or 4227855 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3120123042 is about 55858.0615667962. The cubic root of 3120123042 is about 1461.2479231609.

Adding to 3120123042 its reverse (2403210213), we get a palindrome (5523333255).

The spelling of 3120123042 in words is "three billion, one hundred twenty million, one hundred twenty-three thousand, forty-two".