421078168 has 96 divisors (see below), whose sum is σ = 980650800. Its totient is φ = 168419328.

The previous prime is 421078129. The next prime is 421078169. The reversal of 421078168 is 861870124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421078169) 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 23 ways as a sum of consecutive naturals, for example, 1192680 + ... + 1193032.

Almost surely, 2^421078168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421078168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490325400).

421078168 is an abundant number, since it is smaller than the sum of its proper divisors (559572632).

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

421078168 is a wasteful number, since it uses less digits than its factorization.

421078168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 421078168 is about 20520.1892778795. The cubic root of 421078168 is about 749.5275056539.

The spelling of 421078168 in words is "four hundred twenty-one million, seventy-eight thousand, one hundred sixty-eight".