42252645 has 16 divisors (see below), whose sum is σ = 67907520. Its totient is φ = 22433664.

The previous prime is 42252629. The next prime is 42252649. The reversal of 42252645 is 54625224.

It is a happy number.

It is not a de Polignac number, because 42252645 - 2⁴ = 42252629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42252649) 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, 2800 + ... + 9609.

It is an arithmetic number, because the mean of its divisors is an integer number (4244220).

Almost surely, 2^42252645 is an apocalyptic number.

It is an amenable number.

42252645 is a deficient number, since it is larger than the sum of its proper divisors (25654875).

42252645 is a wasteful number, since it uses less digits than its factorization.

42252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12644.

The product of its digits is 19200, while the sum is 30.

The square root of 42252645 is about 6500.2034583542. The cubic root of 42252645 is about 348.2982563266.

Adding to 42252645 its reverse (54625224), we get a palindrome (96877869).

The spelling of 42252645 in words is "forty-two million, two hundred fifty-two thousand, six hundred forty-five".