421441340335530 has 384 divisors, whose sum is σ = 1075141994008320. Its totient is φ = 105571813294080.

The previous prime is 421441340335529. The next prime is 421441340335549. The reversal of 421441340335530 is 35533043144124.

It is a super-2 number, since 2×421441340335530² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 362374324729 + ... + 362374325891.

It is an arithmetic number, because the mean of its divisors is an integer number (2799848942730).

Almost surely, 2^{421441340335530} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421441340335530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537570997004160).

421441340335530 is an abundant number, since it is smaller than the sum of its proper divisors (653700653672790).

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

421441340335530 is a wasteful number, since it uses less digits than its factorization.

421441340335530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846 (or 1683 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 421441340335530 its reverse (35533043144124), we get a palindrome (456974383479654).

The spelling of 421441340335530 in words is "four hundred twenty-one trillion, four hundred forty-one billion, three hundred forty million, three hundred thirty-five thousand, five hundred thirty".