421682377 has 16 divisors (see below), whose sum is σ = 440132112. Its totient is φ = 403660800.

The previous prime is 421682357. The next prime is 421682407. The reversal of 421682377 is 773286124.

It can be written as a sum of positive squares in 8 ways, for example, as 225570361 + 196112016 = 15019^2 + 14004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421682377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421682347) 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, 1051377 + ... + 1051777.

It is an arithmetic number, because the mean of its divisors is an integer number (27508257).

Almost surely, 2^421682377 is an apocalyptic number.

It is an amenable number.

421682377 is a deficient number, since it is larger than the sum of its proper divisors (18449735).

421682377 is a wasteful number, since it uses less digits than its factorization.

421682377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828.

The product of its digits is 112896, while the sum is 40.

The square root of 421682377 is about 20534.9063060926. The cubic root of 421682377 is about 749.8858356599.

The spelling of 421682377 in words is "four hundred twenty-one million, six hundred eighty-two thousand, three hundred seventy-seven".