420838771 has 8 divisors (see below), whose sum is σ = 443656080. Its totient is φ = 398088288.

The previous prime is 420838753. The next prime is 420838837. The reversal of 420838771 is 177838024.

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 420838771 - 2¹⁷ = 420707699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420838741) 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, 3496 + ... + 29221.

It is an arithmetic number, because the mean of its divisors is an integer number (55457010).

Almost surely, 2^420838771 is an apocalyptic number.

420838771 is a deficient number, since it is larger than the sum of its proper divisors (22817309).

420838771 is a wasteful number, since it uses less digits than its factorization.

420838771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33413.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 420838771 is about 20514.3552421225. The cubic root of 420838771 is about 749.3854349209.

The spelling of 420838771 in words is "four hundred twenty million, eight hundred thirty-eight thousand, seven hundred seventy-one".