542240323506 has 48 divisors (see below), whose sum is σ = 1421672114304. Its totient is φ = 145812523392.

The previous prime is 542240323459. The next prime is 542240323511. The reversal of 542240323506 is 605323042245.

542240323506 is a `hidden beast` number, since 5 + 42 + 240 + 323 + 50 + 6 = 666.

It is a super-2 number, since 2×542240323506² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126571230 + ... + 126575513.

It is an arithmetic number, because the mean of its divisors is an integer number (29618169048).

Almost surely, 2^542240323506 is an apocalyptic number.

542240323506 is an abundant number, since it is smaller than the sum of its proper divisors (879431790798).

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

542240323506 is a wasteful number, since it uses less digits than its factorization.

542240323506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253146775 (or 253146772 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 542240323506 in words is "five hundred forty-two billion, two hundred forty million, three hundred twenty-three thousand, five hundred six".