42534245 has 24 divisors (see below), whose sum is σ = 57507576. Its totient is φ = 30019968.

The previous prime is 42534241. The next prime is 42534251. The reversal of 42534245 is 54243524.

It can be written as a sum of positive squares in 4 ways, for example, as 2819041 + 39715204 = 1679^2 + 6302^2 .

It is not a de Polignac number, because 42534245 - 2² = 42534241 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 (42534241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33767 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (2396149).

Almost surely, 2^42534245 is an apocalyptic number.

It is an amenable number.

42534245 is a deficient number, since it is larger than the sum of its proper divisors (14973331).

42534245 is a wasteful number, since it uses less digits than its factorization.

42534245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1278 counting only the distinct ones).

The product of its digits is 19200, while the sum is 29.

The square root of 42534245 is about 6521.8283479405. The cubic root of 42534245 is about 349.0703081914.

Adding to 42534245 its reverse (54243524), we get a palindrome (96777769).

The spelling of 42534245 in words is "forty-two million, five hundred thirty-four thousand, two hundred forty-five".