42509327 has 16 divisors (see below), whose sum is σ = 52335360. Its totient is φ = 33711552.

The previous prime is 42509317. The next prime is 42509353. The reversal of 42509327 is 72390524.

It is a happy number.

It is not a de Polignac number, because 42509327 - 2¹² = 42505231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42509293 and 42509302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42509317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2003 + ... + 9435.

It is an arithmetic number, because the mean of its divisors is an integer number (3270960).

Almost surely, 2^42509327 is an apocalyptic number.

42509327 is a deficient number, since it is larger than the sum of its proper divisors (9826033).

42509327 is a wasteful number, since it uses less digits than its factorization.

42509327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7502.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 42509327 is about 6519.9177142047. The cubic root of 42509327 is about 349.0021291430.

The spelling of 42509327 in words is "forty-two million, five hundred nine thousand, three hundred twenty-seven".