423420220300521 has 16 divisors (see below), whose sum is σ = 599726048398400. Its totient is φ = 264969872284608.

The previous prime is 423420220300453. The next prime is 423420220300589. The reversal of 423420220300521 is 125003022024324.

It is an interprime number because it is at equal distance from previous prime (423420220300453) and next prime (423420220300589).

It is not a de Polignac number, because 423420220300521 - 2¹⁵ = 423420220267753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423420220300421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34075337446 + ... + 34075349871.

It is an arithmetic number, because the mean of its divisors is an integer number (37482878024900).

Almost surely, 2^{423420220300521} is an apocalyptic number.

It is an amenable number.

423420220300521 is a deficient number, since it is larger than the sum of its proper divisors (176305828097879).

423420220300521 is a wasteful number, since it uses less digits than its factorization.

423420220300521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68150687448.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 423420220300521 its reverse (125003022024324), we get a palindrome (548423242324845).

The spelling of 423420220300521 in words is "four hundred twenty-three trillion, four hundred twenty billion, two hundred twenty million, three hundred thousand, five hundred twenty-one".