401442 has 16 divisors (see below), whose sum is σ = 838080. Its totient is φ = 127952.

The previous prime is 401417. The next prime is 401473. The reversal of 401442 is 244104.

It is a super-2 number, since 2×401442² = 322311358728, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 401442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (52380).

2⁴⁰¹⁴⁴² is an apocalyptic number.

401442 is an abundant number, since it is smaller than the sum of its proper divisors (436638).

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

401442 is a wasteful number, since it uses less digits than its factorization.

401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 401442 is about 633.5945075520. The cubic root of 401442 is about 73.7690633474.

Adding to 401442 its reverse (244104), we get a palindrome (645546).

The spelling of 401442 in words is "four hundred one thousand, four hundred forty-two", and thus it is an iban number.