42212132849 has 2 divisors, whose sum is σ = 42212132850. Its totient is φ = 42212132848.

The previous prime is 42212132789. The next prime is 42212132903. The reversal of 42212132849 is 94823121224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42189160000 + 22972849 = 205400^2 + 4793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42212132849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42212132549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106066424 + 21106066425.

It is an arithmetic number, because the mean of its divisors is an integer number (21106066425).

Almost surely, 2^42212132849 is an apocalyptic number.

It is an amenable number.

42212132849 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212132849 is an equidigital number, since it uses as much as digits as its factorization.

42212132849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The spelling of 42212132849 in words is "forty-two billion, two hundred twelve million, one hundred thirty-two thousand, eight hundred forty-nine".