406240521201 has 24 divisors (see below), whose sum is σ = 588423064320. Its totient is φ = 270075206016.

The previous prime is 406240521173. The next prime is 406240521227. The reversal of 406240521201 is 102125042604.

406240521201 is a `hidden beast` number, since 40 + 6 + 2 + 405 + 212 + 0 + 1 = 666.

It is not a de Polignac number, because 406240521201 - 2³⁰ = 405166779377 is a prime.

It is a super-2 number, since 2×406240521201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (406240521251) 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 23 ways as a sum of consecutive naturals, for example, 4661241 + ... + 4747593.

It is an arithmetic number, because the mean of its divisors is an integer number (24517627680).

Almost surely, 2^406240521201 is an apocalyptic number.

It is an amenable number.

406240521201 is a deficient number, since it is larger than the sum of its proper divisors (182182543119).

406240521201 is a wasteful number, since it uses less digits than its factorization.

406240521201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87805 (or 87802 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 406240521201 its reverse (102125042604), we get a palindrome (508365563805).

The spelling of 406240521201 in words is "four hundred six billion, two hundred forty million, five hundred twenty-one thousand, two hundred one".