42862998821 has 2 divisors, whose sum is σ = 42862998822. Its totient is φ = 42862998820.

The previous prime is 42862998809. The next prime is 42862998851. The reversal of 42862998821 is 12889926824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42812161921 + 50836900 = 206911^2 + 7130^2 .

It is a cyclic number.

It is not a de Polignac number, because 42862998821 - 2³⁰ = 41789256997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42862998851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21431499410 + 21431499411.

It is an arithmetic number, because the mean of its divisors is an integer number (21431499411).

Almost surely, 2^42862998821 is an apocalyptic number.

It is an amenable number.

42862998821 is a deficient number, since it is larger than the sum of its proper divisors (1).

42862998821 is an equidigital number, since it uses as much as digits as its factorization.

42862998821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 59.

The spelling of 42862998821 in words is "forty-two billion, eight hundred sixty-two million, nine hundred ninety-eight thousand, eight hundred twenty-one".