542936706421 has 2 divisors, whose sum is σ = 542936706422. Its totient is φ = 542936706420.

The previous prime is 542936706371. The next prime is 542936706449. The reversal of 542936706421 is 124607639245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489650062500 + 53286643921 = 699750^2 + 230839^2 .

It is a cyclic number.

It is not a de Polignac number, because 542936706421 - 2²⁷ = 542802488693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542936706121) 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 as a sum of consecutive naturals, namely, 271468353210 + 271468353211.

It is an arithmetic number, because the mean of its divisors is an integer number (271468353211).

Almost surely, 2^542936706421 is an apocalyptic number.

It is an amenable number.

542936706421 is a deficient number, since it is larger than the sum of its proper divisors (1).

542936706421 is an equidigital number, since it uses as much as digits as its factorization.

542936706421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 542936706421 in words is "five hundred forty-two billion, nine hundred thirty-six million, seven hundred six thousand, four hundred twenty-one".