401211143 has 4 divisors (see below), whose sum is σ = 415046040. Its totient is φ = 387376248.

The previous prime is 401211121. The next prime is 401211179. The reversal of 401211143 is 341112104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401211143 - 2¹⁰ = 401210119 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 (401211193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6917405 + ... + 6917462.

It is an arithmetic number, because the mean of its divisors is an integer number (103761510).

Almost surely, 2^401211143 is an apocalyptic number.

401211143 is a deficient number, since it is larger than the sum of its proper divisors (13834897).

401211143 is a wasteful number, since it uses less digits than its factorization.

401211143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13834896.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 401211143 is about 20030.2556898308. The cubic root of 401211143 is about 737.5491985947.

Adding to 401211143 its reverse (341112104), we get a palindrome (742323247).

The spelling of 401211143 in words is "four hundred one million, two hundred eleven thousand, one hundred forty-three".