401243 has 2 divisors, whose sum is σ = 401244. Its totient is φ = 401242.

The previous prime is 401237. The next prime is 401279. The reversal of 401243 is 342104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401243 - 2⁶ = 401179 is a prime.

It is a plaindrome in base 6.

It is not a weakly prime, because it can be changed into another prime (401743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200621 + 200622.

It is an arithmetic number, because the mean of its divisors is an integer number (200622).

2⁴⁰¹²⁴³ is an apocalyptic number.

401243 is a deficient number, since it is larger than the sum of its proper divisors (1).

401243 is an equidigital number, since it uses as much as digits as its factorization.

401243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 401243 is about 633.4374475826. The cubic root of 401243 is about 73.7568719059.

Adding to 401243 its reverse (342104), we get a palindrome (743347).

The spelling of 401243 in words is "four hundred one thousand, two hundred forty-three", and thus it is an iban number.