6541244242 has 16 divisors (see below), whose sum is σ = 10585619352. Its totient is φ = 3013608960.

The previous prime is 6541244239. The next prime is 6541244267. The reversal of 6541244242 is 2424421456.

It can be written as a sum of positive squares in 4 ways, for example, as 2313513801 + 4227730441 = 48099^2 + 65021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6541244198 and 6541244207.

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, 211359 + ... + 240322.

Almost surely, 2^6541244242 is an apocalyptic number.

6541244242 is a deficient number, since it is larger than the sum of its proper divisors (4044375110).

6541244242 is a wasteful number, since it uses less digits than its factorization.

6541244242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452253.

The product of its digits is 61440, while the sum is 34.

The square root of 6541244242 is about 80877.9589381433. The cubic root of 6541244242 is about 1870.1945560966.

Adding to 6541244242 its reverse (2424421456), we get a palindrome (8965665698).

The spelling of 6541244242 in words is "six billion, five hundred forty-one million, two hundred forty-four thousand, two hundred forty-two".