421530151020 has 192 divisors, whose sum is σ = 1302388803072. Its totient is φ = 101016576000.

The previous prime is 421530151013. The next prime is 421530151043. The reversal of 421530151020 is 20151035124.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62160030 + ... + 62166810.

It is an arithmetic number, because the mean of its divisors is an integer number (6783275016).

Almost surely, 2^421530151020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421530151020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651194401536).

421530151020 is an abundant number, since it is smaller than the sum of its proper divisors (880858652052).

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

421530151020 is a wasteful number, since it uses less digits than its factorization.

421530151020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872 (or 7870 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 421530151020 its reverse (20151035124), we get a palindrome (441681186144).

The spelling of 421530151020 in words is "four hundred twenty-one billion, five hundred thirty million, one hundred fifty-one thousand, twenty".