401405434021 has 8 divisors (see below), whose sum is σ = 403526246400. Its totient is φ = 399284822160.

The previous prime is 401405434013. The next prime is 401405434033. The reversal of 401405434021 is 120434504104.

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 401405434021 - 2³ = 401405434013 is a prime.

It is a super-2 number, since 2×401405434021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401405434051) 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, 5692860 + ... + 5762938.

It is an arithmetic number, because the mean of its divisors is an integer number (50440780800).

Almost surely, 2^401405434021 is an apocalyptic number.

It is an amenable number.

401405434021 is a deficient number, since it is larger than the sum of its proper divisors (2120812379).

401405434021 is a wasteful number, since it uses less digits than its factorization.

401405434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100259.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 401405434021 its reverse (120434504104), we get a palindrome (521839938125).

The spelling of 401405434021 in words is "four hundred one billion, four hundred five million, four hundred thirty-four thousand, twenty-one".