42198209629 has 2 divisors, whose sum is σ = 42198209630. Its totient is φ = 42198209628.

The previous prime is 42198209567. The next prime is 42198209663. The reversal of 42198209629 is 92690289124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40843601604 + 1354608025 = 202098^2 + 36805^2 .

It is a cyclic number.

It is not a de Polignac number, because 42198209629 - 2¹¹ = 42198207581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42198209699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21099104814 + 21099104815.

It is an arithmetic number, because the mean of its divisors is an integer number (21099104815).

Almost surely, 2^42198209629 is an apocalyptic number.

It is an amenable number.

42198209629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42198209629 is an equidigital number, since it uses as much as digits as its factorization.

42198209629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 42198209629 in words is "forty-two billion, one hundred ninety-eight million, two hundred nine thousand, six hundred twenty-nine".