421730721150 has 48 divisors (see below), whose sum is σ = 1071401769648. Its totient is φ = 109718560000.

The previous prime is 421730721091. The next prime is 421730721197. The reversal of 421730721150 is 51127037124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34280901 + ... + 34293200.

It is an arithmetic number, because the mean of its divisors is an integer number (22320870201).

Almost surely, 2^421730721150 is an apocalyptic number.

421730721150 is an abundant number, since it is smaller than the sum of its proper divisors (649671048498).

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

421730721150 is a wasteful number, since it uses less digits than its factorization.

421730721150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68574157 (or 68574152 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

Adding to 421730721150 its reverse (51127037124), we get a palindrome (472857758274).

The spelling of 421730721150 in words is "four hundred twenty-one billion, seven hundred thirty million, seven hundred twenty-one thousand, one hundred fifty".