492021000 has 128 divisors (see below), whose sum is σ = 1705766400. Its totient is φ = 131198400.

The previous prime is 492020939. The next prime is 492021029. The reversal of 492021000 is 120294.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17889 + ... + 36111.

It is an arithmetic number, because the mean of its divisors is an integer number (13326300).

Almost surely, 2^492021000 is an apocalyptic number.

492021000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 492021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852883200).

492021000 is an abundant number, since it is smaller than the sum of its proper divisors (1213745400).

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

492021000 is a wasteful number, since it uses less digits than its factorization.

492021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18253 (or 18233 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 492021000 is about 22181.5463843259. The cubic root of 492021000 is about 789.4559090735.

Adding to 492021000 its reverse (120294), we get a palindrome (492141294).

The spelling of 492021000 in words is "four hundred ninety-two million, twenty-one thousand".