402320211442 has 4 divisors (see below), whose sum is σ = 603480317166. Its totient is φ = 201160105720.

The previous prime is 402320211427. The next prime is 402320211451. The reversal of 402320211442 is 244112023204.

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., 367816777441 + 34503434001 = 606479^2 + 185751^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100580052859 + ... + 100580052862.

Almost surely, 2^402320211442 is an apocalyptic number.

402320211442 is a deficient number, since it is larger than the sum of its proper divisors (201160105724).

402320211442 is a wasteful number, since it uses less digits than its factorization.

402320211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201160105723.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 402320211442 its reverse (244112023204), we get a palindrome (646432234646).

The spelling of 402320211442 in words is "four hundred two billion, three hundred twenty million, two hundred eleven thousand, four hundred forty-two".