420165857600 has 42 divisors (see below), whose sum is σ = 1033870617294. Its totient is φ = 168066342400.

The previous prime is 420165857539. The next prime is 420165857669. The reversal of 420165857600 is 6758561024.

It can be written as a sum of positive squares in 3 ways, for example, as 110335580224 + 309830277376 = 332168^2 + 556624^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 131300231 + ... + 131303430.

Almost surely, 2^420165857600 is an apocalyptic number.

420165857600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420165857600 is an abundant number, since it is smaller than the sum of its proper divisors (613704759694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420165857600 is a wasteful number, since it uses less digits than its factorization.

420165857600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262603683 (or 262603668 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 420165857600 in words is "four hundred twenty billion, one hundred sixty-five million, eight hundred fifty-seven thousand, six hundred".