401442230144 has 64 divisors (see below), whose sum is σ = 846917240400. Its totient is φ = 188886097920.

The previous prime is 401442230087. The next prime is 401442230173. The reversal of 401442230144 is 441032244104.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×401442230144² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27434222 + ... + 27448850.

Almost surely, 2^401442230144 is an apocalyptic number.

It is an amenable number.

401442230144 is an abundant number, since it is smaller than the sum of its proper divisors (445475010256).

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

401442230144 is a wasteful number, since it uses less digits than its factorization.

401442230144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27271 (or 27259 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 401442230144 its reverse (441032244104), we get a palindrome (842474474248).

The spelling of 401442230144 in words is "four hundred one billion, four hundred forty-two million, two hundred thirty thousand, one hundred forty-four".