421292016 has 140 divisors (see below), whose sum is σ = 1288909320. Its totient is φ = 132969600.

The previous prime is 421292009. The next prime is 421292021. The reversal of 421292016 is 610292124.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 220666 + ... + 222566.

Almost surely, 2^421292016 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 421292016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644454660).

421292016 is an abundant number, since it is smaller than the sum of its proper divisors (867617304).

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

421292016 is a wasteful number, since it uses less digits than its factorization.

421292016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946 (or 1925 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 421292016 is about 20525.3992896606. The cubic root of 421292016 is about 749.6543687432.

The spelling of 421292016 in words is "four hundred twenty-one million, two hundred ninety-two thousand, sixteen".