421401101042041 has 4 divisors (see below), whose sum is σ = 428309315813284. Its totient is φ = 414492886270800.

The previous prime is 421401101041979. The next prime is 421401101042069. The reversal of 421401101042041 is 140240101104124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9411985866816 + 411989115175225 = 3067896^2 + 20297515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421401101042041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421401101041997 and 421401101042015.

It is not an unprimeable number, because it can be changed into a prime (421401101048041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3454107385530 + ... + 3454107385651.

It is an arithmetic number, because the mean of its divisors is an integer number (107077328953321).

Almost surely, 2^{421401101042041} is an apocalyptic number.

It is an amenable number.

421401101042041 is a deficient number, since it is larger than the sum of its proper divisors (6908214771243).

421401101042041 is an equidigital number, since it uses as much as digits as its factorization.

421401101042041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908214771242.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 421401101042041 its reverse (140240101104124), we get a palindrome (561641202146165).

The spelling of 421401101042041 in words is "four hundred twenty-one trillion, four hundred one billion, one hundred one million, forty-two thousand, forty-one".