421554000 has 160 divisors (see below), whose sum is σ = 1553400576. Its totient is φ = 96345600.

The previous prime is 421553989. The next prime is 421554011. The reversal of 421554000 is 455124.

It is an interprime number because it is at equal distance from previous prime (421553989) and next prime (421554011).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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, 36982 + ... + 47018.

Almost surely, 2^421554000 is an apocalyptic number.

421554000 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 421554000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776700288).

421554000 is an abundant number, since it is smaller than the sum of its proper divisors (1131846576).

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

421554000 is a wasteful number, since it uses less digits than its factorization.

421554000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10070 (or 10054 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 421554000 is about 20531.7802442945. The cubic root of 421554000 is about 749.8097295114.

The spelling of 421554000 in words is "four hundred twenty-one million, five hundred fifty-four thousand".