400324313123242 has 4 divisors (see below), whose sum is σ = 600486469684866. Its totient is φ = 200162156561620.

The previous prime is 400324313123179. The next prime is 400324313123249. The reversal of 400324313123242 is 242321313423004.

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., 257545975001121 + 142778338122121 = 16048239^2 + 11948989^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400324313123198 and 400324313123207.

It is not an unprimeable number, because it can be changed into a prime (400324313123249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100081078280809 + ... + 100081078280812.

Almost surely, 2^{400324313123242} is an apocalyptic number.

400324313123242 is a deficient number, since it is larger than the sum of its proper divisors (200162156561624).

400324313123242 is a wasteful number, since it uses less digits than its factorization.

400324313123242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200162156561623.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 400324313123242 its reverse (242321313423004), we get a palindrome (642645626546246).

The spelling of 400324313123242 in words is "four hundred trillion, three hundred twenty-four billion, three hundred thirteen million, one hundred twenty-three thousand, two hundred forty-two".