405538311442 has 8 divisors (see below), whose sum is σ = 663608146032. Its totient is φ = 184335596100.

The previous prime is 405538311427. The next prime is 405538311443. The reversal of 405538311442 is 244113835504.

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

It is a super-2 number, since 2×405538311442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405538311395 and 405538311404.

It is not an unprimeable number, because it can be changed into a prime (405538311443) by changing a digit.

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, 9216779784 + ... + 9216779827.

It is an arithmetic number, because the mean of its divisors is an integer number (82951018254).

Almost surely, 2^405538311442 is an apocalyptic number.

405538311442 is a deficient number, since it is larger than the sum of its proper divisors (258069834590).

405538311442 is a wasteful number, since it uses less digits than its factorization.

405538311442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18433559624.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 405538311442 in words is "four hundred five billion, five hundred thirty-eight million, three hundred eleven thousand, four hundred forty-two".