421044011421 has 16 divisors (see below), whose sum is σ = 619308866880. Its totient is φ = 252311016320.

The previous prime is 421044011411. The next prime is 421044011429. The reversal of 421044011421 is 124110440124.

It is not a de Polignac number, because 421044011421 - 2⁵ = 421044011389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421044011391 and 421044011400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421044011429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71676330 + ... + 71682203.

It is an arithmetic number, because the mean of its divisors is an integer number (38706804180).

Almost surely, 2^421044011421 is an apocalyptic number.

It is an amenable number.

421044011421 is a deficient number, since it is larger than the sum of its proper divisors (198264855459).

421044011421 is a wasteful number, since it uses less digits than its factorization.

421044011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143358636.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 421044011421 its reverse (124110440124), we get a palindrome (545154451545).

The spelling of 421044011421 in words is "four hundred twenty-one billion, forty-four million, eleven thousand, four hundred twenty-one".