42531265 has 24 divisors (see below), whose sum is σ = 60279552. Its totient is φ = 28717920.

The previous prime is 42531211. The next prime is 42531277. The reversal of 42531265 is 56213524.

It is not a de Polignac number, because 42531265 - 2¹¹ = 42529217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15120 + ... + 17710.

It is an arithmetic number, because the mean of its divisors is an integer number (2511648).

Almost surely, 2^42531265 is an apocalyptic number.

It is an amenable number.

42531265 is a deficient number, since it is larger than the sum of its proper divisors (17748287).

42531265 is a wasteful number, since it uses less digits than its factorization.

42531265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677 (or 2670 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 42531265 is about 6521.5998803974. The cubic root of 42531265 is about 349.0621559068.

Adding to 42531265 its reverse (56213524), we get a palindrome (98744789).

The spelling of 42531265 in words is "forty-two million, five hundred thirty-one thousand, two hundred sixty-five".