42507713 has 4 divisors (see below), whose sum is σ = 42659268. Its totient is φ = 42356160.

The previous prime is 42507697. The next prime is 42507721. The reversal of 42507713 is 31770524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36881329 + 5626384 = 6073^2 + 2372^2 .

It is a cyclic number.

It is not a de Polignac number, because 42507713 - 2⁴ = 42507697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42507743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75356 + ... + 75917.

It is an arithmetic number, because the mean of its divisors is an integer number (10664817).

Almost surely, 2^42507713 is an apocalyptic number.

It is an amenable number.

42507713 is a deficient number, since it is larger than the sum of its proper divisors (151555).

42507713 is a wasteful number, since it uses less digits than its factorization.

42507713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151554.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 42507713 is about 6519.7939384616. The cubic root of 42507713 is about 348.9977121001.

The spelling of 42507713 in words is "forty-two million, five hundred seven thousand, seven hundred thirteen".