505431044212542 has 32 divisors (see below), whose sum is σ = 1155271781577984. Its totient is φ = 144408766852800.

The previous prime is 505431044212447. The next prime is 505431044212561. The reversal of 505431044212542 is 245212440134505.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 505431044212494 and 505431044212503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70818042 + ... + 77627682.

It is an arithmetic number, because the mean of its divisors is an integer number (36102243174312).

Almost surely, 2^{505431044212542} is an apocalyptic number.

505431044212542 is an abundant number, since it is smaller than the sum of its proper divisors (649840737365442).

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

505431044212542 is a wasteful number, since it uses less digits than its factorization.

505431044212542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8576864.

The product of its (nonzero) digits is 768000, while the sum is 42.

The spelling of 505431044212542 in words is "five hundred five trillion, four hundred thirty-one billion, forty-four million, two hundred twelve thousand, five hundred forty-two".