542043644237 has 2 divisors, whose sum is σ = 542043644238. Its totient is φ = 542043644236.

The previous prime is 542043644231. The next prime is 542043644281. The reversal of 542043644237 is 732446340245.

It is an a-pointer prime, because the next prime (542043644281) can be obtained adding 542043644237 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442882264036 + 99161380201 = 665494^2 + 314899^2 .

It is a cyclic number.

It is not a de Polignac number, because 542043644237 - 2⁶ = 542043644173 is a prime.

It is a super-2 number, since 2×542043644237² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542043644231) 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 as a sum of consecutive naturals, namely, 271021822118 + 271021822119.

It is an arithmetic number, because the mean of its divisors is an integer number (271021822119).

Almost surely, 2^542043644237 is an apocalyptic number.

It is an amenable number.

542043644237 is a deficient number, since it is larger than the sum of its proper divisors (1).

542043644237 is an equidigital number, since it uses as much as digits as its factorization.

542043644237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 44.

The spelling of 542043644237 in words is "five hundred forty-two billion, forty-three million, six hundred forty-four thousand, two hundred thirty-seven".