421335250240 has 28 divisors (see below), whose sum is σ = 1003304565396. Its totient is φ = 168534099968.

The previous prime is 421335250223. The next prime is 421335250267. The reversal of 421335250240 is 42052533124.

It can be written as a sum of positive squares in 2 ways, for example, as 53827712064 + 367507538176 = 232008^2 + 606224^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658336009 + ... + 658336648.

It is an arithmetic number, because the mean of its divisors is an integer number (35832305907).

Almost surely, 2^421335250240 is an apocalyptic number.

421335250240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421335250240 is an abundant number, since it is smaller than the sum of its proper divisors (581969315156).

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

421335250240 is a wasteful number, since it uses less digits than its factorization.

421335250240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316672674 (or 1316672664 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 421335250240 its reverse (42052533124), we get a palindrome (463387783364).

The spelling of 421335250240 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred fifty thousand, two hundred forty".