400010122224242 has 4 divisors (see below), whose sum is σ = 600015183336366. Its totient is φ = 200005061112120.

The previous prime is 400010122224211. The next prime is 400010122224247. The reversal of 400010122224242 is 242422221010004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 388060095976081 + 11950026248161 = 19699241^2 + 3456881^2 .

It is not an unprimeable number, because it can be changed into a prime (400010122224247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100002530556059 + ... + 100002530556062.

Almost surely, 2^{400010122224242} is an apocalyptic number.

400010122224242 is a deficient number, since it is larger than the sum of its proper divisors (200005061112124).

400010122224242 is a wasteful number, since it uses less digits than its factorization.

400010122224242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200005061112123.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 400010122224242 its reverse (242422221010004), we get a palindrome (642432343234246).

The spelling of 400010122224242 in words is "four hundred trillion, ten billion, one hundred twenty-two million, two hundred twenty-four thousand, two hundred forty-two".