400224142 has 16 divisors (see below), whose sum is σ = 604169280. Its totient is φ = 198838528.

The previous prime is 400224073. The next prime is 400224193. The reversal of 400224142 is 241422004.

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, 409158 + ... + 410134.

It is an arithmetic number, because the mean of its divisors is an integer number (37760580).

Almost surely, 2^400224142 is an apocalyptic number.

400224142 is a deficient number, since it is larger than the sum of its proper divisors (203945138).

400224142 is a wasteful number, since it uses less digits than its factorization.

400224142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

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

The square root of 400224142 is about 20005.6027652255. The cubic root of 400224142 is about 736.9438983946.

Adding to 400224142 its reverse (241422004), we get a palindrome (641646146).

The spelling of 400224142 in words is "four hundred million, two hundred twenty-four thousand, one hundred forty-two".