401842 has 8 divisors (see below), whose sum is σ = 688896. Its totient is φ = 172212.

The previous prime is 401839. The next prime is 401861. The reversal of 401842 is 248104.

401842 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×401842² = 322953985928, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14338 + ... + 14365.

It is an arithmetic number, because the mean of its divisors is an integer number (86112).

2⁴⁰¹⁸⁴² is an apocalyptic number.

401842 is a deficient number, since it is larger than the sum of its proper divisors (287054).

401842 is a wasteful number, since it uses less digits than its factorization.

401842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28712.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 401842 is about 633.9100882617. The cubic root of 401842 is about 73.7935565745.

Adding to 401842 its reverse (248104), we get a palindrome (649946).

It can be divided in two parts, 40184 and 2, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 401842 in words is "four hundred one thousand, eight hundred forty-two".