6742205145 has 36 divisors (see below), whose sum is σ = 12654614700. Its totient is φ = 3319235712.

The previous prime is 6742205123. The next prime is 6742205149. The reversal of 6742205145 is 5415022476.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1526621184 + 5215583961 = 39072^2 + 72219^2 .

It is not a de Polignac number, because 6742205145 - 2²⁸ = 6473769689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6742205149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 435670 + ... + 450879.

It is an arithmetic number, because the mean of its divisors is an integer number (351517075).

Almost surely, 2^6742205145 is an apocalyptic number.

6742205145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6742205145 is a deficient number, since it is larger than the sum of its proper divisors (5912409555).

6742205145 is a wasteful number, since it uses less digits than its factorization.

6742205145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886586 (or 886570 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 6742205145 is about 82110.9319457525. The cubic root of 6742205145 is about 1889.1538204206.

The spelling of 6742205145 in words is "six billion, seven hundred forty-two million, two hundred five thousand, one hundred forty-five".