2012240423 has 4 divisors (see below), whose sum is σ = 2012897040. Its totient is φ = 2011583808.

The previous prime is 2012240407. The next prime is 2012240431. The reversal of 2012240423 is 3240422102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3240422102 = 2 ⋅1620211051.

It is a cyclic number.

It is not a de Polignac number, because 2012240423 - 2⁴ = 2012240407 is a prime.

It is a super-2 number, since 2×2012240423² = 8098223039910437858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012240395 and 2012240404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012240443) 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, 323690 + ... + 329847.

It is an arithmetic number, because the mean of its divisors is an integer number (503224260).

Almost surely, 2^2012240423 is an apocalyptic number.

2012240423 is a deficient number, since it is larger than the sum of its proper divisors (656617).

2012240423 is an equidigital number, since it uses as much as digits as its factorization.

2012240423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656616.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2012240423 is about 44858.0028868874. The cubic root of 2012240423 is about 1262.4861517678.

Adding to 2012240423 its reverse (3240422102), we get a palindrome (5252662525).

The spelling of 2012240423 in words is "two billion, twelve million, two hundred forty thousand, four hundred twenty-three".