401405043 has 32 divisors (see below), whose sum is σ = 595558656. Its totient is φ = 238912128.

The previous prime is 401405023. The next prime is 401405057. The reversal of 401405043 is 340504104.

It is not a de Polignac number, because 401405043 - 2²⁸ = 132969587 is a prime.

It is a super-2 number, since 2×401405043² = 322252017091663698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401405023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178321 + ... + 180557.

It is an arithmetic number, because the mean of its divisors is an integer number (18611208).

Almost surely, 2^401405043 is an apocalyptic number.

401405043 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

401405043 is a deficient number, since it is larger than the sum of its proper divisors (194153613).

401405043 is a wasteful number, since it uses less digits than its factorization.

401405043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 401405043 is about 20035.0952830277. The cubic root of 401405043 is about 737.6679953596.

Adding to 401405043 its reverse (340504104), we get a palindrome (741909147).

The spelling of 401405043 in words is "four hundred one million, four hundred five thousand, forty-three".