220042349 has 2 divisors, whose sum is σ = 220042350. Its totient is φ = 220042348.

The previous prime is 220042321. The next prime is 220042387. The reversal of 220042349 is 943240022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219573124 + 469225 = 14818^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 220042349 - 2²⁰ = 218993773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220042049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110021174 + 110021175.

It is an arithmetic number, because the mean of its divisors is an integer number (110021175).

Almost surely, 2^220042349 is an apocalyptic number.

It is an amenable number.

220042349 is a deficient number, since it is larger than the sum of its proper divisors (1).

220042349 is an equidigital number, since it uses as much as digits as its factorization.

220042349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 220042349 is about 14833.8244899958. The cubic root of 220042349 is about 603.7198064821.

The spelling of 220042349 in words is "two hundred twenty million, forty-two thousand, three hundred forty-nine".