842108249 has 2 divisors, whose sum is σ = 842108250. Its totient is φ = 842108248.

The previous prime is 842108237. The next prime is 842108303. The reversal of 842108249 is 942801248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777015625 + 65092624 = 27875^2 + 8068^2 .

It is a cyclic number.

It is not a de Polignac number, because 842108249 - 2¹⁶ = 842042713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (842108219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421054124 + 421054125.

It is an arithmetic number, because the mean of its divisors is an integer number (421054125).

Almost surely, 2^842108249 is an apocalyptic number.

It is an amenable number.

842108249 is a deficient number, since it is larger than the sum of its proper divisors (1).

842108249 is an equidigital number, since it uses as much as digits as its factorization.

842108249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 842108249 is about 29019.1014505963. The cubic root of 842108249 is about 944.3275075115.

The spelling of 842108249 in words is "eight hundred forty-two million, one hundred eight thousand, two hundred forty-nine".