426042109 has 2 divisors, whose sum is σ = 426042110. Its totient is φ = 426042108.

The previous prime is 426042101. The next prime is 426042119. The reversal of 426042109 is 901240624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382085209 + 43956900 = 19547^2 + 6630^2 .

It is a cyclic number.

It is not a de Polignac number, because 426042109 - 2³ = 426042101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426042101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213021054 + 213021055.

It is an arithmetic number, because the mean of its divisors is an integer number (213021055).

Almost surely, 2^426042109 is an apocalyptic number.

It is an amenable number.

426042109 is a deficient number, since it is larger than the sum of its proper divisors (1).

426042109 is an equidigital number, since it uses as much as digits as its factorization.

426042109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 426042109 is about 20640.7875092013. The cubic root of 426042109 is about 752.4613116830.

The spelling of 426042109 in words is "four hundred twenty-six million, forty-two thousand, one hundred nine".