42098434529 has 2 divisors, whose sum is σ = 42098434530. Its totient is φ = 42098434528.

The previous prime is 42098434519. The next prime is 42098434579. The reversal of 42098434529 is 92543489024.

It is an a-pointer prime, because the next prime (42098434579) can be obtained adding 42098434529 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40109274529 + 1989160000 = 200273^2 + 44600^2 .

It is a cyclic number.

It is not a de Polignac number, because 42098434529 - 2²⁸ = 41829999073 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, 21049217264 + 21049217265.

It is an arithmetic number, because the mean of its divisors is an integer number (21049217265).

Almost surely, 2^42098434529 is an apocalyptic number.

It is an amenable number.

42098434529 is a deficient number, since it is larger than the sum of its proper divisors (1).

42098434529 is an equidigital number, since it uses as much as digits as its factorization.

42098434529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 42098434529 in words is "forty-two billion, ninety-eight million, four hundred thirty-four thousand, five hundred twenty-nine".