42051673 has 2 divisors, whose sum is σ = 42051674. Its totient is φ = 42051672.

The previous prime is 42051671. The next prime is 42051677. The reversal of 42051673 is 37615024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34609689 + 7441984 = 5883^2 + 2728^2 .

It is a cyclic number.

It is not a de Polignac number, because 42051673 - 2¹ = 42051671 is a prime.

Together with 42051671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42051671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21025836 + 21025837.

It is an arithmetic number, because the mean of its divisors is an integer number (21025837).

Almost surely, 2^42051673 is an apocalyptic number.

It is an amenable number.

42051673 is a deficient number, since it is larger than the sum of its proper divisors (1).

42051673 is an equidigital number, since it uses as much as digits as its factorization.

42051673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42051673 is about 6484.7261314569. The cubic root of 42051673 is about 347.7451590234.

Adding to 42051673 its reverse (37615024), we get a palindrome (79666697).

It can be divided in two parts, 42051 and 673, that added together give a palindrome (42724).

The spelling of 42051673 in words is "forty-two million, fifty-one thousand, six hundred seventy-three".