42878745301349 has 2 divisors, whose sum is σ = 42878745301350. Its totient is φ = 42878745301348.

The previous prime is 42878745301279. The next prime is 42878745301351. The reversal of 42878745301349 is 94310354787824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40233877348324 + 2644867953025 = 6343018^2 + 1626305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42878745301349 is a prime.

Together with 42878745301351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878745301649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439372650674 + 21439372650675.

It is an arithmetic number, because the mean of its divisors is an integer number (21439372650675).

Almost surely, 2^{42878745301349} is an apocalyptic number.

It is an amenable number.

42878745301349 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878745301349 is an equidigital number, since it uses as much as digits as its factorization.

42878745301349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162570240, while the sum is 65.

The spelling of 42878745301349 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred forty-five million, three hundred one thousand, three hundred forty-nine".