421254288 has 480 divisors, whose sum is σ = 1611896832. Its totient is φ = 99532800.

The previous prime is 421254233. The next prime is 421254293. The reversal of 421254288 is 882452124.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 95 ways as a sum of consecutive naturals, for example, 6905778 + ... + 6905838.

Almost surely, 2^421254288 is an apocalyptic number.

421254288 is a gapful number since it is divisible by the number (48) 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 421254288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805948416).

421254288 is an abundant number, since it is smaller than the sum of its proper divisors (1190642544).

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

421254288 is a wasteful number, since it uses less digits than its factorization.

421254288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 134 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 421254288 is about 20524.4802126631. The cubic root of 421254288 is about 749.6319901212.

The spelling of 421254288 in words is "four hundred twenty-one million, two hundred fifty-four thousand, two hundred eighty-eight".