420750777 has 16 divisors (see below), whose sum is σ = 569687040. Its totient is φ = 276189072.

The previous prime is 420750773. The next prime is 420750809. The reversal of 420750777 is 777057024.

It is not a de Polignac number, because 420750777 - 2² = 420750773 is a prime.

It is a super-2 number, since 2×420750777² = 354062432692207458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420750773) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 51508 + ... + 59114.

It is an arithmetic number, because the mean of its divisors is an integer number (35605440).

Almost surely, 2^420750777 is an apocalyptic number.

It is an amenable number.

420750777 is a deficient number, since it is larger than the sum of its proper divisors (148936263).

420750777 is a wasteful number, since it uses less digits than its factorization.

420750777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892.

The product of its (nonzero) digits is 96040, while the sum is 39.

The square root of 420750777 is about 20512.2104367131. The cubic root of 420750777 is about 749.3332011258. Note that the first 3 decimals are identical.

The spelling of 420750777 in words is "four hundred twenty million, seven hundred fifty thousand, seven hundred seventy-seven".