42147474137 has 2 divisors, whose sum is σ = 42147474138. Its totient is φ = 42147474136.

The previous prime is 42147474121. The next prime is 42147474157. The reversal of 42147474137 is 73147474124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41145688336 + 1001785801 = 202844^2 + 31651^2 .

It is a cyclic number.

It is not a de Polignac number, because 42147474137 - 2⁴ = 42147474121 is a prime.

It is a super-2 number, since 2×42147474137² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42147474157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073737068 + 21073737069.

It is an arithmetic number, because the mean of its divisors is an integer number (21073737069).

Almost surely, 2^42147474137 is an apocalyptic number.

It is an amenable number.

42147474137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42147474137 is an equidigital number, since it uses as much as digits as its factorization.

42147474137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 526848, while the sum is 44.

The spelling of 42147474137 in words is "forty-two billion, one hundred forty-seven million, four hundred seventy-four thousand, one hundred thirty-seven".