405312051442 has 8 divisors (see below), whose sum is σ = 608547649500. Its totient is φ = 202462834944.

The previous prime is 405312051439. The next prime is 405312051479. The reversal of 405312051442 is 244150213504.

It can be written as a sum of positive squares in 2 ways, for example, as 396737476641 + 8574574801 = 629871^2 + 92599^2 .

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

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, 96592767 + ... + 96596962.

Almost surely, 2^405312051442 is an apocalyptic number.

405312051442 is a deficient number, since it is larger than the sum of its proper divisors (203235598058).

405312051442 is a wasteful number, since it uses less digits than its factorization.

405312051442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193190780.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 405312051442 its reverse (244150213504), we get a palindrome (649462264946).

The spelling of 405312051442 in words is "four hundred five billion, three hundred twelve million, fifty-one thousand, four hundred forty-two".