421102357776 has 135 divisors (see below), whose sum is σ = 1252296909903. Its totient is φ = 132069012480.

The previous prime is 421102357757. The next prime is 421102357787. The reversal of 421102357776 is 677753201124.

The square root of 421102357776 is 648924.

It is a perfect power (a square), and thus also a powerful number.

421102357776 is a `hidden beast` number, since 4 + 2 + 1 + 1 + 0 + 2 + 3 + 577 + 76 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18862275600 + 402240082176 = 137340^2 + 634224^2 .

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 26 ways as a sum of consecutive naturals, for example, 132378906 + ... + 132382086.

Almost surely, 2^421102357776 is an apocalyptic number.

421102357776 is the 648924-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421102357776

421102357776 is an abundant number, since it is smaller than the sum of its proper divisors (831194552127).

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

421102357776 is an equidigital number, since it uses as much as digits as its factorization.

421102357776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410 (or 3203 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 421102357776 in words is "four hundred twenty-one billion, one hundred two million, three hundred fifty-seven thousand, seven hundred seventy-six".