401140424 has 16 divisors (see below), whose sum is σ = 784840320. Its totient is φ = 191849680.

The previous prime is 401140423. The next prime is 401140429. The reversal of 401140424 is 424041104.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 401140396 and 401140405.

It is not an unprimeable number, because it can be changed into a prime (401140423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089872 + ... + 1090239.

It is an arithmetic number, because the mean of its divisors is an integer number (49052520).

Almost surely, 2^401140424 is an apocalyptic number.

It is an amenable number.

401140424 is a deficient number, since it is larger than the sum of its proper divisors (383699896).

401140424 is a wasteful number, since it uses less digits than its factorization.

401140424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180140 (or 2180136 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 401140424 is about 20028.4903075594. The cubic root of 401140424 is about 737.5058616407.

Adding to 401140424 its reverse (424041104), we get a palindrome (825181528).

The spelling of 401140424 in words is "four hundred one million, one hundred forty thousand, four hundred twenty-four".