42042673 has 2 divisors, whose sum is σ = 42042674. Its totient is φ = 42042672.

The previous prime is 42042659. The next prime is 42042677. The reversal of 42042673 is 37624024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41563809 + 478864 = 6447^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 42042673 - 2¹⁷ = 41911601 is a prime.

It is not a weakly prime, because it can be changed into another prime (42042677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021336 + 21021337.

It is an arithmetic number, because the mean of its divisors is an integer number (21021337).

Almost surely, 2^42042673 is an apocalyptic number.

It is an amenable number.

42042673 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042673 is an equidigital number, since it uses as much as digits as its factorization.

42042673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 42042673 is about 6484.0321559968. The cubic root of 42042673 is about 347.7203488354.

Adding to 42042673 its reverse (37624024), we get a palindrome (79666697).

The spelling of 42042673 in words is "forty-two million, forty-two thousand, six hundred seventy-three".