2142240505 has 8 divisors (see below), whose sum is σ = 2577299400. Its totient is φ = 1709385216.

The previous prime is 2142240491. The next prime is 2142240509. The reversal of 2142240505 is 5050422412.

It can be written as a sum of positive squares in 4 ways, for example, as 235346281 + 1906894224 = 15341^2 + 43668^2 .

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 2142240505 - 2⁹ = 2142239993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2142240505.

It is not an unprimeable number, because it can be changed into a prime (2142240509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548760 + ... + 552649.

It is an arithmetic number, because the mean of its divisors is an integer number (322162425).

Almost surely, 2^2142240505 is an apocalyptic number.

It is an amenable number.

2142240505 is a deficient number, since it is larger than the sum of its proper divisors (435058895).

2142240505 is a wasteful number, since it uses less digits than its factorization.

2142240505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101803.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2142240505 is about 46284.3440593037. The cubic root of 2142240505 is about 1289.1083125306.

Adding to 2142240505 its reverse (5050422412), we get a palindrome (7192662917).

The spelling of 2142240505 in words is "two billion, one hundred forty-two million, two hundred forty thousand, five hundred five".