2142479855 has 4 divisors (see below), whose sum is σ = 2570975832. Its totient is φ = 1713983880.

The previous prime is 2142479851. The next prime is 2142479917. The reversal of 2142479855 is 5589742412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2142479855 - 2² = 2142479851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142479851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214247981 + ... + 214247990.

It is an arithmetic number, because the mean of its divisors is an integer number (642743958).

Almost surely, 2^2142479855 is an apocalyptic number.

2142479855 is a deficient number, since it is larger than the sum of its proper divisors (428495977).

2142479855 is an equidigital number, since it uses as much as digits as its factorization.

2142479855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428495976.

The product of its digits is 806400, while the sum is 47.

The square root of 2142479855 is about 46286.9296346172. The cubic root of 2142479855 is about 1289.1563209255.

The spelling of 2142479855 in words is "two billion, one hundred forty-two million, four hundred seventy-nine thousand, eight hundred fifty-five".