405421405401 has 8 divisors (see below), whose sum is σ = 553746309984. Its totient is φ = 263688718880.

The previous prime is 405421405373. The next prime is 405421405409. The reversal of 405421405401 is 104504124504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405421405401 - 2¹¹ = 405421403353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (405421405409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648054371 + ... + 1648054616.

It is an arithmetic number, because the mean of its divisors is an integer number (69218288748).

Almost surely, 2^405421405401 is an apocalyptic number.

405421405401 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

405421405401 is a deficient number, since it is larger than the sum of its proper divisors (148324904583).

405421405401 is a wasteful number, since it uses less digits than its factorization.

405421405401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296109031.

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 405421405401 its reverse (104504124504), we get a palindrome (509925529905).

The spelling of 405421405401 in words is "four hundred five billion, four hundred twenty-one million, four hundred five thousand, four hundred one".