405221143342 has 8 divisors (see below), whose sum is σ = 609347506032. Its totient is φ = 202105308000.

The previous prime is 405221143277. The next prime is 405221143357. The reversal of 405221143342 is 243341122504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×405221143342² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 252630834 + ... + 252632437.

It is an arithmetic number, because the mean of its divisors is an integer number (76168438254).

Almost surely, 2^405221143342 is an apocalyptic number.

405221143342 is a deficient number, since it is larger than the sum of its proper divisors (204126362690).

405221143342 is a wasteful number, since it uses less digits than its factorization.

405221143342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505263674.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 405221143342 its reverse (243341122504), we get a palindrome (648562265846).

The spelling of 405221143342 in words is "four hundred five billion, two hundred twenty-one million, one hundred forty-three thousand, three hundred forty-two".