2012440123 has 8 divisors (see below), whose sum is σ = 2082768480. Its totient is φ = 1942174080.

The previous prime is 2012440099. The next prime is 2012440147. The reversal of 2012440123 is 3210442102.

It is an interprime number because it is at equal distance from previous prime (2012440099) and next prime (2012440147).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2012440123 - 2⁵ = 2012440091 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 2012440123.

It is not an unprimeable number, because it can be changed into a prime (2012440153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55738 + ... + 84448.

It is an arithmetic number, because the mean of its divisors is an integer number (260346060).

Almost surely, 2^2012440123 is an apocalyptic number.

2012440123 is a deficient number, since it is larger than the sum of its proper divisors (70328357).

2012440123 is a wasteful number, since it uses less digits than its factorization.

2012440123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31157.

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

The square root of 2012440123 is about 44860.2287444012. The cubic root of 2012440123 is about 1262.5279145284.

Adding to 2012440123 its reverse (3210442102), we get a palindrome (5222882225).

The spelling of 2012440123 in words is "two billion, twelve million, four hundred forty thousand, one hundred twenty-three".