401156 has 12 divisors (see below), whose sum is σ = 802368. Its totient is φ = 171912.

The previous prime is 401119. The next prime is 401161. The reversal of 401156 is 651104.

It is a happy number.

401156 is an admirable number.

It is a super-2 number, since 2×401156² = 321852272672, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 401156.

It is an unprimeable number.

401156 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 3 ways as a sum of consecutive naturals, for example, 7136 + ... + 7191.

It is an arithmetic number, because the mean of its divisors is an integer number (66864).

2⁴⁰¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

401156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401156 is a wasteful number, since it uses less digits than its factorization.

401156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14338 (or 14336 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 401156 is about 633.3687709384. The cubic root of 401156 is about 73.7515407128.

The spelling of 401156 in words is "four hundred one thousand, one hundred fifty-six".