401423144 has 16 divisors (see below), whose sum is σ = 753400320. Its totient is φ = 200516400.

The previous prime is 401423119. The next prime is 401423147. The reversal of 401423144 is 441324104.

It is a happy number.

It is a super-2 number, since 2×401423144² = 322281081077689472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401423147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15464 + ... + 32279.

It is an arithmetic number, because the mean of its divisors is an integer number (47087520).

Almost surely, 2^401423144 is an apocalyptic number.

It is an amenable number.

401423144 is a deficient number, since it is larger than the sum of its proper divisors (351977176).

401423144 is a wasteful number, since it uses less digits than its factorization.

401423144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48800 (or 48796 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 401423144 is about 20035.5470102516. The cubic root of 401423144 is about 737.6790833515.

Adding to 401423144 its reverse (441324104), we get a palindrome (842747248).

The spelling of 401423144 in words is "four hundred one million, four hundred twenty-three thousand, one hundred forty-four".