42731404441605 has 192 divisors, whose sum is σ = 85143430195200. Its totient is φ = 19622761382400.

The previous prime is 42731404441603. The next prime is 42731404441631. The reversal of 42731404441605 is 50614440413724.

42731404441605 is a `hidden beast` number, since 4 + 2 + 7 + 3 + 1 + 40 + 444 + 160 + 5 = 666.

42731404441605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42731404441605 - 2¹ = 42731404441603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42731404441603) 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 191 ways as a sum of consecutive naturals, for example, 2937060871 + ... + 2937075419.

It is an arithmetic number, because the mean of its divisors is an integer number (443455365600).

Almost surely, 2^{42731404441605} is an apocalyptic number.

42731404441605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42731404441605 is a deficient number, since it is larger than the sum of its proper divisors (42412025753595).

42731404441605 is a wasteful number, since it uses less digits than its factorization.

42731404441605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17112 (or 17109 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 42731404441605 in words is "forty-two trillion, seven hundred thirty-one billion, four hundred four million, four hundred forty-one thousand, six hundred five".