401111543 has 8 divisors (see below), whose sum is σ = 458914080. Its totient is φ = 343434240.

The previous prime is 401111537. The next prime is 401111609. The reversal of 401111543 is 345111104.

It is a happy number.

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 401111543 - 2¹⁸ = 400849399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401101543) 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, 24338 + ... + 37343.

It is an arithmetic number, because the mean of its divisors is an integer number (57364260).

Almost surely, 2^401111543 is an apocalyptic number.

401111543 is a deficient number, since it is larger than the sum of its proper divisors (57802537).

401111543 is an equidigital number, since it uses as much as digits as its factorization.

401111543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62617.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 401111543 is about 20027.7692966541. The cubic root of 401111543 is about 737.4881617558.

Adding to 401111543 its reverse (345111104), we get a palindrome (746222647).

The spelling of 401111543 in words is "four hundred one million, one hundred eleven thousand, five hundred forty-three".