401745 has 8 divisors (see below), whose sum is σ = 642816. Its totient is φ = 214256.

The previous prime is 401743. The next prime is 401771. The reversal of 401745 is 547104.

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 401745 - 2¹ = 401743 is a prime.

It is a super-2 number, since 2×401745² = 322798090050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13377 + ... + 13406.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

2⁴⁰¹⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

401745 is a deficient number, since it is larger than the sum of its proper divisors (241071).

401745 is a wasteful number, since it uses less digits than its factorization.

401745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26791.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 401745 is about 633.8335743711. The cubic root of 401745 is about 73.7876184603.

Adding to 401745 its reverse (547104), we get a palindrome (948849).

The spelling of 401745 in words is "four hundred one thousand, seven hundred forty-five".