401543005 has 8 divisors (see below), whose sum is σ = 483392952. Its totient is φ = 320206848.

The previous prime is 401542963. The next prime is 401543011. The reversal of 401543005 is 500345104.

It can be written as a sum of positive squares in 4 ways, for example, as 23707161 + 377835844 = 4869^2 + 19438^2 .

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 401543005 - 2¹³ = 401534813 is a prime.

It is a super-3 number, since 3×401543005³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126724 + ... + 129853.

It is an arithmetic number, because the mean of its divisors is an integer number (60424119).

Almost surely, 2^401543005 is an apocalyptic number.

It is an amenable number.

401543005 is a deficient number, since it is larger than the sum of its proper divisors (81849947).

401543005 is a wasteful number, since it uses less digits than its factorization.

401543005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256895.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 401543005 is about 20038.5379955724. The cubic root of 401543005 is about 737.7524972831.

Adding to 401543005 its reverse (500345104), we get a palindrome (901888109).

The spelling of 401543005 in words is "four hundred one million, five hundred forty-three thousand, five".