420442066 has 16 divisors (see below), whose sum is σ = 689225760. Its totient is φ = 190768480.

The previous prime is 420442031. The next prime is 420442067. The reversal of 420442066 is 660244024.

It is not an unprimeable number, because it can be changed into a prime (420442067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4276 + ... + 29311.

It is an arithmetic number, because the mean of its divisors is an integer number (43076610).

Almost surely, 2^420442066 is an apocalyptic number.

420442066 is a deficient number, since it is larger than the sum of its proper divisors (268783694).

420442066 is a wasteful number, since it uses less digits than its factorization.

420442066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34169.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 420442066 is about 20504.6840014666. The cubic root of 420442066 is about 749.1498907089.

The spelling of 420442066 in words is "four hundred twenty million, four hundred forty-two thousand, sixty-six".