420569111 has 8 divisors (see below), whose sum is σ = 430738704. Its totient is φ = 410417280.

The previous prime is 420569101. The next prime is 420569129. The reversal of 420569111 is 111965024.

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

It is a cyclic number.

It is not a de Polignac number, because 420569111 - 2¹⁸ = 420306967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420569101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52001 + ... + 59541.

It is an arithmetic number, because the mean of its divisors is an integer number (53842338).

Almost surely, 2^420569111 is an apocalyptic number.

420569111 is a deficient number, since it is larger than the sum of its proper divisors (10169593).

420569111 is a wasteful number, since it uses less digits than its factorization.

420569111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8881.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 420569111 is about 20507.7817181674. The cubic root of 420569111 is about 749.2253399965.

The spelling of 420569111 in words is "four hundred twenty million, five hundred sixty-nine thousand, one hundred eleven".