421310144421 has 32 divisors (see below), whose sum is σ = 641198557440. Its totient is φ = 273246336000.

The previous prime is 421310144417. The next prime is 421310144443. The reversal of 421310144421 is 124441013124.

421310144421 is a `hidden beast` number, since 4 + 213 + 1 + 0 + 1 + 4 + 442 + 1 = 666.

It is not a de Polignac number, because 421310144421 - 2² = 421310144417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421310144401) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 148305 + ... + 929846.

It is an arithmetic number, because the mean of its divisors is an integer number (20037454920).

Almost surely, 2^421310144421 is an apocalyptic number.

421310144421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

421310144421 is a deficient number, since it is larger than the sum of its proper divisors (219888413019).

421310144421 is a wasteful number, since it uses less digits than its factorization.

421310144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078554 (or 1078548 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 421310144421 its reverse (124441013124), we get a palindrome (545751157545).

The spelling of 421310144421 in words is "four hundred twenty-one billion, three hundred ten million, one hundred forty-four thousand, four hundred twenty-one".