420546777 has 16 divisors (see below), whose sum is σ = 662931840. Its totient is φ = 232025472.

The previous prime is 420546769. The next prime is 420546787. The reversal of 420546777 is 777645024.

It is not a de Polignac number, because 420546777 - 2³ = 420546769 is a prime.

It is a super-3 number, since 3×420546777³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (420546727) 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 15 ways as a sum of consecutive naturals, for example, 344668 + ... + 345885.

It is an arithmetic number, because the mean of its divisors is an integer number (41433240).

Almost surely, 2^420546777 is an apocalyptic number.

It is an amenable number.

420546777 is a deficient number, since it is larger than the sum of its proper divisors (242385063).

420546777 is a wasteful number, since it uses less digits than its factorization.

420546777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690592.

The product of its (nonzero) digits is 329280, while the sum is 42.

The square root of 420546777 is about 20507.2371859302. The cubic root of 420546777 is about 749.2120774161.

The spelling of 420546777 in words is "four hundred twenty million, five hundred forty-six thousand, seven hundred seventy-seven".