401056005 has 32 divisors (see below), whose sum is σ = 738662400. Its totient is φ = 182014272.

The previous prime is 401056003. The next prime is 401056031. The reversal of 401056005 is 500650104.

It is a happy number.

It is not a de Polignac number, because 401056005 - 2¹ = 401056003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401056001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856 + ... + 28334.

It is an arithmetic number, because the mean of its divisors is an integer number (23083200).

Almost surely, 2^401056005 is an apocalyptic number.

It is an amenable number.

401056005 is a deficient number, since it is larger than the sum of its proper divisors (337606395).

401056005 is a wasteful number, since it uses less digits than its factorization.

401056005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27633.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 401056005 is about 20026.3827237971. The cubic root of 401056005 is about 737.4541225891.

The spelling of 401056005 in words is "four hundred one million, fifty-six thousand, five".