2605742242 has 8 divisors (see below), whose sum is σ = 4014251676. Its totient is φ = 1267658352.

The previous prime is 2605742203. The next prime is 2605742261. The reversal of 2605742242 is 2422475062.

It can be written as a sum of positive squares in 2 ways, for example, as 2589893881 + 15848361 = 50891^2 + 3981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2605742242³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2605742198 and 2605742207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17606293 + ... + 17606440.

Almost surely, 2^2605742242 is an apocalyptic number.

2605742242 is a deficient number, since it is larger than the sum of its proper divisors (1408509434).

2605742242 is a wasteful number, since it uses less digits than its factorization.

2605742242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35212772.

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 2605742242 is about 51046.4713961700. The cubic root of 2605742242 is about 1376.0804276413.

The spelling of 2605742242 in words is "two billion, six hundred five million, seven hundred forty-two thousand, two hundred forty-two".