421894746 has 192 divisors, whose sum is σ = 1210809600. Its totient is φ = 103016448.

The previous prime is 421894741. The next prime is 421894769. The reversal of 421894746 is 647498124.

It is not an unprimeable number, because it can be changed into a prime (421894741) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3035145 + ... + 3035283.

It is an arithmetic number, because the mean of its divisors is an integer number (6306300).

Almost surely, 2^421894746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421894746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605404800).

421894746 is an abundant number, since it is smaller than the sum of its proper divisors (788914854).

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

421894746 is a wasteful number, since it uses less digits than its factorization.

421894746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 290 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 421894746 is about 20540.0765821357. The cubic root of 421894746 is about 750.0117011508.

The spelling of 421894746 in words is "four hundred twenty-one million, eight hundred ninety-four thousand, seven hundred forty-six".