42041709 has 6 divisors (see below), whose sum is σ = 60726926. Its totient is φ = 28027800.

The previous prime is 42041669. The next prime is 42041719. The reversal of 42041709 is 90714024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34257609 + 7784100 = 5853^2 + 2790^2 .

It is not a de Polignac number, because 42041709 - 2⁷ = 42041581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42041719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2335642 + ... + 2335659.

Almost surely, 2^42041709 is an apocalyptic number.

It is an amenable number.

42041709 is a deficient number, since it is larger than the sum of its proper divisors (18685217).

42041709 is a wasteful number, since it uses less digits than its factorization.

42041709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671307 (or 4671304 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 42041709 is about 6483.9578191102. The cubic root of 42041709 is about 347.7176911787.

The spelling of 42041709 in words is "forty-two million, forty-one thousand, seven hundred nine".