2666250242 has 4 divisors (see below), whose sum is σ = 3999375366. Its totient is φ = 1333125120.

The previous prime is 2666250241. The next prime is 2666250271. The reversal of 2666250242 is 2420526662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2298339481 + 367910761 = 47941^2 + 19181^2 .

It is not an unprimeable number, because it can be changed into a prime (2666250241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666562559 + ... + 666562562.

Almost surely, 2^2666250242 is an apocalyptic number.

2666250242 is a deficient number, since it is larger than the sum of its proper divisors (1333125124).

2666250242 is a wasteful number, since it uses less digits than its factorization.

2666250242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333125123.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 2666250242 is about 51635.7457775135. The cubic root of 2666250242 is about 1386.6503617592.

The spelling of 2666250242 in words is "two billion, six hundred sixty-six million, two hundred fifty thousand, two hundred forty-two".