421121000 has 32 divisors (see below), whose sum is σ = 985425480. Its totient is φ = 168448000.

The previous prime is 421120981. The next prime is 421121009. The reversal of 421121000 is 121124.

It can be written as a sum of positive squares in 4 ways, for example, as 37039396 + 384081604 = 6086^2 + 19598^2 .

It is not an unprimeable number, because it can be changed into a prime (421121009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209561 + ... + 211560.

Almost surely, 2^421121000 is an apocalyptic number.

421121000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421121000 is an abundant number, since it is smaller than the sum of its proper divisors (564304480).

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

421121000 is a wasteful number, since it uses less digits than its factorization.

421121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421142 (or 421128 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 421121000 is about 20521.2329064313. The cubic root of 421121000 is about 749.5529187293.

Adding to 421121000 its reverse (121124), we get a palindrome (421242124).

The spelling of 421121000 in words is "four hundred twenty-one million, one hundred twenty-one thousand".