42620266 has 8 divisors (see below), whose sum is σ = 68848164. Its totient is φ = 19670880.

The previous prime is 42620239. The next prime is 42620269. The reversal of 42620266 is 66202624.

It can be written as a sum of positive squares in 2 ways, for example, as 41332041 + 1288225 = 6429^2 + 1135^2 .

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 (42620269) 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, 819595 + ... + 819646.

Almost surely, 2^42620266 is an apocalyptic number.

42620266 is a deficient number, since it is larger than the sum of its proper divisors (26227898).

42620266 is a wasteful number, since it uses less digits than its factorization.

42620266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639256.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 42620266 is about 6528.4198700758. The cubic root of 42620266 is about 349.3054689605.

The spelling of 42620266 in words is "forty-two million, six hundred twenty thousand, two hundred sixty-six".