405244304524242 has 12 divisors (see below), whose sum is σ = 878029326469230. Its totient is φ = 135081434841408.

The previous prime is 405244304524229. The next prime is 405244304524271. The reversal of 405244304524242 is 242425403442504.

405244304524242 is a `hidden beast` number, since 4 + 0 + 52 + 4 + 4 + 30 + 4 + 524 + 2 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 380150907456681 + 25093397067561 = 19497459^2 + 5009331^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11256786236767 + ... + 11256786236802.

Almost surely, 2^{405244304524242} is an apocalyptic number.

405244304524242 is an abundant number, since it is smaller than the sum of its proper divisors (472785021944988).

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

405244304524242 is a wasteful number, since it uses less digits than its factorization.

405244304524242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22513572473577 (or 22513572473574 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 45.

Adding to 405244304524242 its reverse (242425403442504), we get a palindrome (647669707966746).

The spelling of 405244304524242 in words is "four hundred five trillion, two hundred forty-four billion, three hundred four million, five hundred twenty-four thousand, two hundred forty-two".