401263 has 8 divisors (see below), whose sum is σ = 418608. Its totient is φ = 384384.

The previous prime is 401243. The next prime is 401279. The reversal of 401263 is 362104.

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 401263 - 2⁵ = 401231 is a prime.

It is a super-2 number, since 2×401263² = 322023990338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3495 + ... + 3607.

It is an arithmetic number, because the mean of its divisors is an integer number (52326).

2⁴⁰¹²⁶³ is an apocalyptic number.

401263 is a deficient number, since it is larger than the sum of its proper divisors (17345).

401263 is a wasteful number, since it uses less digits than its factorization.

401263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 401263 is about 633.4532342644. The cubic root of 401263 is about 73.7580973586.

Adding to 401263 its reverse (362104), we get a palindrome (763367).

The spelling of 401263 in words is "four hundred one thousand, two hundred sixty-three".