401236 has 18 divisors (see below), whose sum is σ = 772730. Its totient is φ = 182160.

The previous prime is 401231. The next prime is 401237. The reversal of 401236 is 632104.

It can be written as a sum of positive squares in only one way, i.e., 352836 + 48400 = 594^2 + 220^2 .

It is a d-powerful number, because it can be written as 4⁹ + 0 + 2¹⁷ + 1 + 3⁵ + 6⁵ .

It is a congruent number.

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

401236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70 + ... + 898.

2⁴⁰¹²³⁶ is an apocalyptic number.

It is an amenable number.

401236 is a deficient number, since it is larger than the sum of its proper divisors (371494).

401236 is a wasteful number, since it uses less digits than its factorization.

401236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 842 counting only the distinct ones).

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

The square root of 401236 is about 633.4319221511. The cubic root of 401236 is about 73.7564429878.

The spelling of 401236 in words is "four hundred one thousand, two hundred thirty-six".