420773385 has 32 divisors (see below), whose sum is σ = 725188608. Its totient is φ = 207725760.

The previous prime is 420773377. The next prime is 420773393. The reversal of 420773385 is 583377024.

It is an interprime number because it is at equal distance from previous prime (420773377) and next prime (420773393).

It is not a de Polignac number, because 420773385 - 2³ = 420773377 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8977 + ... + 30366.

It is an arithmetic number, because the mean of its divisors is an integer number (22662144).

Almost surely, 2^420773385 is an apocalyptic number.

It is an amenable number.

420773385 is a deficient number, since it is larger than the sum of its proper divisors (304415223).

420773385 is a wasteful number, since it uses less digits than its factorization.

420773385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39405.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 420773385 is about 20512.7615157004. The cubic root of 420773385 is about 749.3466220728.

The spelling of 420773385 in words is "four hundred twenty million, seven hundred seventy-three thousand, three hundred eighty-five".