542450125109 has 2 divisors, whose sum is σ = 542450125110. Its totient is φ = 542450125108.

The previous prime is 542450125099. The next prime is 542450125163. The reversal of 542450125109 is 901521054245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423048778084 + 119401347025 = 650422^2 + 345545^2 .

It is a cyclic number.

It is not a de Polignac number, because 542450125109 - 2⁴ = 542450125093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542450145109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271225062554 + 271225062555.

It is an arithmetic number, because the mean of its divisors is an integer number (271225062555).

Almost surely, 2^542450125109 is an apocalyptic number.

It is an amenable number.

542450125109 is a deficient number, since it is larger than the sum of its proper divisors (1).

542450125109 is an equidigital number, since it uses as much as digits as its factorization.

542450125109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 542450125109 in words is "five hundred forty-two billion, four hundred fifty million, one hundred twenty-five thousand, one hundred nine".