421440363240 has 192 divisors, whose sum is σ = 1400899199040. Its totient is φ = 101326417920.

The previous prime is 421440363221. The next prime is 421440363241. The reversal of 421440363240 is 42363044124.

It is a super-2 number, since 2×421440363240² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421440363241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 630400 + ... + 1113680.

It is an arithmetic number, because the mean of its divisors is an integer number (7296349995).

Almost surely, 2^421440363240 is an apocalyptic number.

421440363240 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 421440363240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700449599520).

421440363240 is an abundant number, since it is smaller than the sum of its proper divisors (979458835800).

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

421440363240 is a wasteful number, since it uses less digits than its factorization.

421440363240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483364 (or 483347 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

The spelling of 421440363240 in words is "four hundred twenty-one billion, four hundred forty million, three hundred sixty-three thousand, two hundred forty".