2742221205 has 24 divisors (see below), whose sum is σ = 4800252600. Its totient is φ = 1448035200.

The previous prime is 2742221201. The next prime is 2742221233. The reversal of 2742221205 is 5021222472.

2742221205 is a `hidden beast` number, since 27 + 422 + 212 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 578017764 + 2164203441 = 24042^2 + 46521^2 .

It is not a de Polignac number, because 2742221205 - 2² = 2742221201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742221201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297130 + ... + 306219.

It is an arithmetic number, because the mean of its divisors is an integer number (200010525).

Almost surely, 2^2742221205 is an apocalyptic number.

It is an amenable number.

2742221205 is a deficient number, since it is larger than the sum of its proper divisors (2058031395).

2742221205 is a wasteful number, since it uses less digits than its factorization.

2742221205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603461 (or 603458 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 2742221205 is about 52366.2219851690. The cubic root of 2742221205 is about 1399.6974184514.

Adding to 2742221205 its reverse (5021222472), we get a palindrome (7763443677).

The spelling of 2742221205 in words is "two billion, seven hundred forty-two million, two hundred twenty-one thousand, two hundred five".