2143142405 has 8 divisors (see below), whose sum is σ = 2572253592. Its totient is φ = 1714192128.

The previous prime is 2143142371. The next prime is 2143142423. The reversal of 2143142405 is 5042413412.

It can be written as a sum of positive squares in 4 ways, for example, as 151930276 + 1991212129 = 12326^2 + 44623^2 .

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 2143142405 - 2⁸ = 2143142149 is a prime.

It is a Duffinian 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, 8672 + ... + 66041.

It is an arithmetic number, because the mean of its divisors is an integer number (321531699).

Almost surely, 2^2143142405 is an apocalyptic number.

It is an amenable number.

2143142405 is a deficient number, since it is larger than the sum of its proper divisors (429111187).

2143142405 is an equidigital number, since it uses as much as digits as its factorization.

2143142405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80455.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2143142405 is about 46294.0860693890. The cubic root of 2143142405 is about 1289.2891953745.

Adding to 2143142405 its reverse (5042413412), we get a palindrome (7185555817).

It can be divided in two parts, 21431 and 42405, that added together give a palindrome (63836).

The spelling of 2143142405 in words is "two billion, one hundred forty-three million, one hundred forty-two thousand, four hundred five".