542173026149 has 2 divisors, whose sum is σ = 542173026150. Its totient is φ = 542173026148.

The previous prime is 542173026107. The next prime is 542173026179. The reversal of 542173026149 is 941620371245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326106097249 + 216066928900 = 571057^2 + 464830^2 .

It is a cyclic number.

It is not a de Polignac number, because 542173026149 - 2⁸ = 542173025893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542173026179) 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, 271086513074 + 271086513075.

It is an arithmetic number, because the mean of its divisors is an integer number (271086513075).

Almost surely, 2^542173026149 is an apocalyptic number.

It is an amenable number.

542173026149 is a deficient number, since it is larger than the sum of its proper divisors (1).

542173026149 is an equidigital number, since it uses as much as digits as its factorization.

542173026149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 542173026149 in words is "five hundred forty-two billion, one hundred seventy-three million, twenty-six thousand, one hundred forty-nine".