42443245 has 16 divisors (see below), whose sum is σ = 57738240. Its totient is φ = 29692224.

The previous prime is 42443239. The next prime is 42443249. The reversal of 42443245 is 54234424.

It is a cyclic number.

It is not a de Polignac number, because 42443245 - 2⁹ = 42442733 is a prime.

It is a super-2 number, since 2×42443245² = 3602858092260050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443249) 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, 15949 + ... + 18418.

It is an arithmetic number, because the mean of its divisors is an integer number (3608640).

Almost surely, 2^42443245 is an apocalyptic number.

It is an amenable number.

42443245 is a deficient number, since it is larger than the sum of its proper divisors (15294995).

42443245 is a wasteful number, since it uses less digits than its factorization.

42443245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34404.

The product of its digits is 15360, while the sum is 28.

The square root of 42443245 is about 6514.8480412056. The cubic root of 42443245 is about 348.8211906586.

Adding to 42443245 its reverse (54234424), we get a palindrome (96677669).

The spelling of 42443245 in words is "forty-two million, four hundred forty-three thousand, two hundred forty-five".