421111392 has 96 divisors (see below), whose sum is σ = 1195907328. Its totient is φ = 128979456.

The previous prime is 421111391. The next prime is 421111417. The reversal of 421111392 is 293111124.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421111391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327583 + ... + 328865.

It is an arithmetic number, because the mean of its divisors is an integer number (12457368).

Almost surely, 2^421111392 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 421111392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597953664).

421111392 is an abundant number, since it is smaller than the sum of its proper divisors (774795936).

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

421111392 is a wasteful number, since it uses less digits than its factorization.

421111392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1564 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 421111392 is about 20520.9988061010. The cubic root of 421111392 is about 749.5472182622.

The spelling of 421111392 in words is "four hundred twenty-one million, one hundred eleven thousand, three hundred ninety-two".