2042643266 has 8 divisors (see below), whose sum is σ = 3095552460. Its totient is φ = 1010792448.

The previous prime is 2042643223. The next prime is 2042643269. The reversal of 2042643266 is 6623462402.

It can be written as a sum of positive squares in 2 ways, for example, as 1779068041 + 263575225 = 42179^2 + 16235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2042643269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5264351 + ... + 5264738.

Almost surely, 2^2042643266 is an apocalyptic number.

2042643266 is a deficient number, since it is larger than the sum of its proper divisors (1052909194).

2042643266 is a wasteful number, since it uses less digits than its factorization.

2042643266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10529188.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 2042643266 is about 45195.6111364809. The cubic root of 2042643266 is about 1268.8126762505.

The spelling of 2042643266 in words is "two billion, forty-two million, six hundred forty-three thousand, two hundred sixty-six".