420540266 has 16 divisors (see below), whose sum is σ = 644855904. Its totient is φ = 205614864.

The previous prime is 420540233. The next prime is 420540277. The reversal of 420540266 is 662045024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26081 + ... + 39003.

It is an arithmetic number, because the mean of its divisors is an integer number (40303494).

Almost surely, 2^420540266 is an apocalyptic number.

420540266 is a deficient number, since it is larger than the sum of its proper divisors (224315638).

420540266 is a wasteful number, since it uses less digits than its factorization.

420540266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 420540266 is about 20507.0784364814. The cubic root of 420540266 is about 749.2082109061.

The spelling of 420540266 in words is "four hundred twenty million, five hundred forty thousand, two hundred sixty-six".