401180243 has 2 divisors, whose sum is σ = 401180244. Its totient is φ = 401180242.

The previous prime is 401180209. The next prime is 401180279. The reversal of 401180243 is 342081104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401180243 - 2¹² = 401176147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401180443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200590121 + 200590122.

It is an arithmetic number, because the mean of its divisors is an integer number (200590122).

Almost surely, 2^401180243 is an apocalyptic number.

401180243 is a deficient number, since it is larger than the sum of its proper divisors (1).

401180243 is an equidigital number, since it uses as much as digits as its factorization.

401180243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 401180243 is about 20029.4843418397. The cubic root of 401180243 is about 737.5302635479.

The spelling of 401180243 in words is "four hundred one million, one hundred eighty thousand, two hundred forty-three".