42591707 has 4 divisors (see below), whose sum is σ = 42609456. Its totient is φ = 42573960.

The previous prime is 42591697. The next prime is 42591709. The reversal of 42591707 is 70719524.

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

It is a cyclic number.

It is not a de Polignac number, because 42591707 - 2⁶ = 42591643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42591709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4583 + ... + 10304.

It is an arithmetic number, because the mean of its divisors is an integer number (10652364).

Almost surely, 2^42591707 is an apocalyptic number.

42591707 is a deficient number, since it is larger than the sum of its proper divisors (17749).

42591707 is a wasteful number, since it uses less digits than its factorization.

42591707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17748.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 42591707 is about 6526.2322208147. The cubic root of 42591707 is about 349.2274306245.

The spelling of 42591707 in words is "forty-two million, five hundred ninety-one thousand, seven hundred seven".