542043644506 has 48 divisors (see below), whose sum is σ = 1018731738024. Its totient is φ = 214399858176.

The previous prime is 542043644491. The next prime is 542043644507. The reversal of 542043644506 is 605446340245.

It can be written as a sum of positive squares in 4 ways, for example, as 165900621481 + 376143023025 = 407309^2 + 613305^2 .

It is a super-2 number, since 2×542043644506² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (542043644507) by changing a digit.

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, 8622966 + ... + 8685598.

Almost surely, 2^542043644506 is an apocalyptic number.

542043644506 is a deficient number, since it is larger than the sum of its proper divisors (476688093518).

542043644506 is a wasteful number, since it uses less digits than its factorization.

542043644506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69455 (or 69448 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 542043644506 in words is "five hundred forty-two billion, forty-three million, six hundred forty-four thousand, five hundred six".