401401543 has 8 divisors (see below), whose sum is σ = 440899200. Its totient is φ = 363741048.

The previous prime is 401401541. The next prime is 401401549. The reversal of 401401543 is 345104104.

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 401401543 - 2¹ = 401401541 is a prime.

It is a super-2 number, since 2×401401543² = 322246397445561698, which 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 (401401541) 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 7 ways as a sum of consecutive naturals, for example, 458833 + ... + 459706.

It is an arithmetic number, because the mean of its divisors is an integer number (55112400).

Almost surely, 2^401401543 is an apocalyptic number.

401401543 is a deficient number, since it is larger than the sum of its proper divisors (39497657).

401401543 is a wasteful number, since it uses less digits than its factorization.

401401543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918581.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 401401543 is about 20035.0079361102. The cubic root of 401401543 is about 737.6658513527.

Adding to 401401543 its reverse (345104104), we get a palindrome (746505647).

The spelling of 401401543 in words is "four hundred one million, four hundred one thousand, five hundred forty-three".