421534412043 has 16 divisors (see below), whose sum is σ = 576049754112. Its totient is φ = 274028040000.

The previous prime is 421534411999. The next prime is 421534412071. The reversal of 421534412043 is 340214435124.

It is not a de Polignac number, because 421534412043 - 2⁹ = 421534411531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421534411995 and 421534412013.

It is not an unprimeable number, because it can be changed into a prime (421534412083) 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 15 ways as a sum of consecutive naturals, for example, 638323 + ... + 1118268.

It is an arithmetic number, because the mean of its divisors is an integer number (36003109632).

Almost surely, 2^421534412043 is an apocalyptic number.

421534412043 is a deficient number, since it is larger than the sum of its proper divisors (154515342069).

421534412043 is a wasteful number, since it uses less digits than its factorization.

421534412043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758586.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 421534412043 its reverse (340214435124), we get a palindrome (761748847167).

The spelling of 421534412043 in words is "four hundred twenty-one billion, five hundred thirty-four million, four hundred twelve thousand, forty-three".