42252745 has 8 divisors (see below), whose sum is σ = 50738184. Its totient is φ = 33778944.

The previous prime is 42252737. The next prime is 42252761. The reversal of 42252745 is 54725224.

It can be written as a sum of positive squares in 4 ways, for example, as 8832784 + 33419961 = 2972^2 + 5781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42252745 - 2³ = 42252737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13027 + ... + 15943.

It is an arithmetic number, because the mean of its divisors is an integer number (6342273).

Almost surely, 2^42252745 is an apocalyptic number.

It is an amenable number.

42252745 is a deficient number, since it is larger than the sum of its proper divisors (8485439).

42252745 is a wasteful number, since it uses less digits than its factorization.

42252745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its digits is 22400, while the sum is 31.

The square root of 42252745 is about 6500.2111504166. The cubic root of 42252745 is about 348.2985311007.

Adding to 42252745 its reverse (54725224), we get a palindrome (96977969).

The spelling of 42252745 in words is "forty-two million, two hundred fifty-two thousand, seven hundred forty-five".