42118049 has 2 divisors, whose sum is σ = 42118050. Its totient is φ = 42118048.

The previous prime is 42118031. The next prime is 42118067. The reversal of 42118049 is 94081124.

It is a balanced prime because it is at equal distance from previous prime (42118031) and next prime (42118067).

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 20430400 = 4657^2 + 4520^2 .

It is a cyclic number.

It is not a de Polignac number, because 42118049 - 2⁸ = 42117793 is a prime.

It is a super-3 number, since 3×42118049³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42118019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21059024 + 21059025.

It is an arithmetic number, because the mean of its divisors is an integer number (21059025).

Almost surely, 2^42118049 is an apocalyptic number.

It is an amenable number.

42118049 is a deficient number, since it is larger than the sum of its proper divisors (1).

42118049 is an equidigital number, since it uses as much as digits as its factorization.

42118049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 42118049 is about 6489.8419857497. The cubic root of 42118049 is about 347.9280276799.

The spelling of 42118049 in words is "forty-two million, one hundred eighteen thousand, forty-nine".