420913194 has 64 divisors (see below), whose sum is σ = 959938560. Its totient is φ = 121970880.

The previous prime is 420913193. The next prime is 420913211. The reversal of 420913194 is 491319024.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420913193) 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 31 ways as a sum of consecutive naturals, for example, 282319 + ... + 283805.

It is an arithmetic number, because the mean of its divisors is an integer number (14999040).

Almost surely, 2^420913194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420913194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479969280).

420913194 is an abundant number, since it is smaller than the sum of its proper divisors (539025366).

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

420913194 is a wasteful number, since it uses less digits than its factorization.

420913194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 420913194 is about 20516.1690868446. The cubic root of 420913194 is about 749.4296072016.

The spelling of 420913194 in words is "four hundred twenty million, nine hundred thirteen thousand, one hundred ninety-four".