42098434579 has 2 divisors, whose sum is σ = 42098434580. Its totient is φ = 42098434578.

The previous prime is 42098434529. The next prime is 42098434621. The reversal of 42098434579 is 97543489024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42098434579 - 2¹⁵ = 42098401811 is a prime.

It is not a weakly prime, because it can be changed into another prime (42098434519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21049217289 + 21049217290.

It is an arithmetic number, because the mean of its divisors is an integer number (21049217290).

Almost surely, 2^42098434579 is an apocalyptic number.

42098434579 is a deficient number, since it is larger than the sum of its proper divisors (1).

42098434579 is an equidigital number, since it uses as much as digits as its factorization.

42098434579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 42098434579 in words is "forty-two billion, ninety-eight million, four hundred thirty-four thousand, five hundred seventy-nine".