402212042242 has 4 divisors (see below), whose sum is σ = 603318063366. Its totient is φ = 201106021120.

The previous prime is 402212042237. The next prime is 402212042299. The reversal of 402212042242 is 242240212204.

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., 370723894641 + 31488147601 = 608871^2 + 177449^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100553010559 + ... + 100553010562.

Almost surely, 2^402212042242 is an apocalyptic number.

402212042242 is a deficient number, since it is larger than the sum of its proper divisors (201106021124).

402212042242 is a wasteful number, since it uses less digits than its factorization.

402212042242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201106021123.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 402212042242 its reverse (242240212204), we get a palindrome (644452254446).

The spelling of 402212042242 in words is "four hundred two billion, two hundred twelve million, forty-two thousand, two hundred forty-two".