405353243425242 has 32 divisors (see below), whose sum is σ = 933817145720832. Its totient is φ = 114903281599344.

The previous prime is 405353243425237. The next prime is 405353243425283. The reversal of 405353243425242 is 242524342353504.

It is a super-2 number, since 2×405353243425242² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405353243425191 and 405353243425200.

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 in 15 ways as a sum of consecutive naturals, for example, 37997111598 + ... + 37997122265.

It is an arithmetic number, because the mean of its divisors is an integer number (29181785803776).

Almost surely, 2^{405353243425242} is an apocalyptic number.

405353243425242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

405353243425242 is an abundant number, since it is smaller than the sum of its proper divisors (528463902295590).

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

405353243425242 is a wasteful number, since it uses less digits than its factorization.

405353243425242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75994234002.

The product of its (nonzero) digits is 13824000, while the sum is 48.

Adding to 405353243425242 its reverse (242524342353504), we get a palindrome (647877585778746).

The spelling of 405353243425242 in words is "four hundred five trillion, three hundred fifty-three billion, two hundred forty-three million, four hundred twenty-five thousand, two hundred forty-two".