12142124405 has 8 divisors (see below), whose sum is σ = 15072982200. Its totient is φ = 9378744256.

The previous prime is 12142124399. The next prime is 12142124413. The reversal of 12142124405 is 50442124121.

It can be written as a sum of positive squares in 4 ways, for example, as 92891044 + 12049233361 = 9638^2 + 109769^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12142124405 - 2⁴ = 12142124389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41869250 + ... + 41869539.

It is an arithmetic number, because the mean of its divisors is an integer number (1884122775).

Almost surely, 2^12142124405 is an apocalyptic number.

It is an amenable number.

12142124405 is a deficient number, since it is larger than the sum of its proper divisors (2930857795).

12142124405 is an equidigital number, since it uses as much as digits as its factorization.

12142124405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83738823.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 12142124405 its reverse (50442124121), we get a palindrome (62584248526).

The spelling of 12142124405 in words is "twelve billion, one hundred forty-two million, one hundred twenty-four thousand, four hundred five".