42147737 has 2 divisors, whose sum is σ = 42147738. Its totient is φ = 42147736.

The previous prime is 42147731. The next prime is 42147769. The reversal of 42147737 is 73774124.

It is a happy number.

42147737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35236096 + 6911641 = 5936^2 + 2629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42147737 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42147697 and 42147706.

It is not a weakly prime, because it can be changed into another prime (42147731) 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, 21073868 + 21073869.

It is an arithmetic number, because the mean of its divisors is an integer number (21073869).

Almost surely, 2^42147737 is an apocalyptic number.

It is an amenable number.

42147737 is a deficient number, since it is larger than the sum of its proper divisors (1).

42147737 is an equidigital number, since it uses as much as digits as its factorization.

42147737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 35.

The square root of 42147737 is about 6492.1288496147. The cubic root of 42147737 is about 348.0097571801.

The spelling of 42147737 in words is "forty-two million, one hundred forty-seven thousand, seven hundred thirty-seven".