240400422 has 24 divisors (see below), whose sum is σ = 528644376. Its totient is φ = 78937056.

The previous prime is 240400409. The next prime is 240400423. The reversal of 240400422 is 224004042.

240400422 is a `hidden beast` number, since 240 + 4 + 0 + 0 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 240400395 and 240400404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240400423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98463 + ... + 100874.

It is an arithmetic number, because the mean of its divisors is an integer number (22026849).

Almost surely, 2^240400422 is an apocalyptic number.

240400422 is an abundant number, since it is smaller than the sum of its proper divisors (288243954).

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

240400422 is a wasteful number, since it uses less digits than its factorization.

240400422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199412 (or 199409 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 240400422 is about 15504.8515633011. The cubic root of 240400422 is about 621.7919214523.

Adding to 240400422 its reverse (224004042), we get a palindrome (464404464).

The spelling of 240400422 in words is "two hundred forty million, four hundred thousand, four hundred twenty-two".