401442043 has 4 divisors (see below), whose sum is σ = 401489200. Its totient is φ = 401394888.

The previous prime is 401442011. The next prime is 401442049. The reversal of 401442043 is 340244104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 401442043 - 2⁵ = 401442011 is a prime.

It is a super-2 number, since 2×401442043² = 322311427776027698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401442049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6855 + ... + 29152.

It is an arithmetic number, because the mean of its divisors is an integer number (100372300).

Almost surely, 2^401442043 is an apocalyptic number.

401442043 is a deficient number, since it is larger than the sum of its proper divisors (47157).

401442043 is a wasteful number, since it uses less digits than its factorization.

401442043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47156.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 401442043 is about 20036.0186414367. The cubic root of 401442043 is about 737.6906598126.

Adding to 401442043 its reverse (340244104), we get a palindrome (741686147).

The spelling of 401442043 in words is "four hundred one million, four hundred forty-two thousand, forty-three".