401442004 has 6 divisors (see below), whose sum is σ = 702523514. Its totient is φ = 200721000.

The previous prime is 401442001. The next prime is 401442011. The reversal of 401442004 is 400244104.

It can be written as a sum of positive squares in only one way, i.e., 370639504 + 30802500 = 19252^2 + 5550^2 .

It is a super-3 number, since 3×401442004³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401442001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50180247 + ... + 50180254.

Almost surely, 2^401442004 is an apocalyptic number.

It is an amenable number.

401442004 is a deficient number, since it is larger than the sum of its proper divisors (301081510).

401442004 is a wasteful number, since it uses less digits than its factorization.

401442004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100360505 (or 100360503 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 401442004 is about 20036.0176681895. The cubic root of 401442004 is about 737.6906359238.

Adding to 401442004 its reverse (400244104), we get a palindrome (801686108).

The spelling of 401442004 in words is "four hundred one million, four hundred forty-two thousand, four".