42868349 has 2 divisors, whose sum is σ = 42868350. Its totient is φ = 42868348.

The previous prime is 42868333. The next prime is 42868387. The reversal of 42868349 is 94386824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 16345849 = 5150^2 + 4043^2 .

It is a cyclic number.

It is not a de Polignac number, because 42868349 - 2⁴ = 42868333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42868249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21434174 + 21434175.

It is an arithmetic number, because the mean of its divisors is an integer number (21434175).

Almost surely, 2^42868349 is an apocalyptic number.

It is an amenable number.

42868349 is a deficient number, since it is larger than the sum of its proper divisors (1).

42868349 is an equidigital number, since it uses as much as digits as its factorization.

42868349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 42868349 is about 6547.3925344369. The cubic root of 42868349 is about 349.9819011049.

The spelling of 42868349 in words is "forty-two million, eight hundred sixty-eight thousand, three hundred forty-nine".