421131545541043 has 4 divisors (see below), whose sum is σ = 424995137702080. Its totient is φ = 417267953380008.

The previous prime is 421131545540969. The next prime is 421131545541053. The reversal of 421131545541043 is 340145545131124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421131545541043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421131545541053) 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, 1931796080355 + ... + 1931796080572.

It is an arithmetic number, because the mean of its divisors is an integer number (106248784425520).

Almost surely, 2^{421131545541043} is an apocalyptic number.

421131545541043 is a deficient number, since it is larger than the sum of its proper divisors (3863592161037).

421131545541043 is a wasteful number, since it uses less digits than its factorization.

421131545541043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863592161036.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 421131545541043 in words is "four hundred twenty-one trillion, one hundred thirty-one billion, five hundred forty-five million, five hundred forty-one thousand, forty-three".