42151849 has 2 divisors, whose sum is σ = 42151850. Its totient is φ = 42151848.

The previous prime is 42151841. The next prime is 42151853. The reversal of 42151849 is 94815124.

It is a happy number.

42151849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28164249 + 13987600 = 5307^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 42151849 - 2³ = 42151841 is a prime.

It is equal to p_2556286 and since 42151849 and 2556286 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42151841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21075924 + 21075925.

It is an arithmetic number, because the mean of its divisors is an integer number (21075925).

Almost surely, 2^42151849 is an apocalyptic number.

It is an amenable number.

42151849 is a deficient number, since it is larger than the sum of its proper divisors (1).

42151849 is an equidigital number, since it uses as much as digits as its factorization.

42151849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 42151849 is about 6492.4455330792. The cubic root of 42151849 is about 348.0210742731.

The spelling of 42151849 in words is "forty-two million, one hundred fifty-one thousand, eight hundred forty-nine".