42537149 has 2 divisors, whose sum is σ = 42537150. Its totient is φ = 42537148.

The previous prime is 42537139. The next prime is 42537169. The reversal of 42537149 is 94173524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 611524 = 6475^2 + 782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42537149 is a prime.

It is a Chen prime.

It is equal to p_2578292 and since 42537149 and 2578292 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42537139) 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, 21268574 + 21268575.

It is an arithmetic number, because the mean of its divisors is an integer number (21268575).

Almost surely, 2^42537149 is an apocalyptic number.

It is an amenable number.

42537149 is a deficient number, since it is larger than the sum of its proper divisors (1).

42537149 is an equidigital number, since it uses as much as digits as its factorization.

42537149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 42537149 is about 6522.0509810948. The cubic root of 42537149 is about 349.0782521991.

The spelling of 42537149 in words is "forty-two million, five hundred thirty-seven thousand, one hundred forty-nine".