401238 has 12 divisors (see below), whose sum is σ = 869388. Its totient is φ = 133740.

The previous prime is 401237. The next prime is 401243. The reversal of 401238 is 832104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22291 = 401238 / (4 + 0 + 1 + 2 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 401238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11128 + ... + 11163.

It is an arithmetic number, because the mean of its divisors is an integer number (72449).

2⁴⁰¹²³⁸ is an apocalyptic number.

401238 is an abundant number, since it is smaller than the sum of its proper divisors (468150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401238 is a wasteful number, since it uses less digits than its factorization.

401238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22299 (or 22296 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 401238 is about 633.4335008507. The cubic root of 401238 is about 73.7565655363.

The spelling of 401238 in words is "four hundred one thousand, two hundred thirty-eight".