4042345 has 16 divisors (see below), whose sum is σ = 5408640. Its totient is φ = 2882304.

The previous prime is 4042343. The next prime is 4042391. The reversal of 4042345 is 5432404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4042345 - 2¹ = 4042343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4042343) 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, 364 + ... + 2866.

It is an arithmetic number, because the mean of its divisors is an integer number (338040).

Almost surely, 2^4042345 is an apocalyptic number.

It is an amenable number.

4042345 is a deficient number, since it is larger than the sum of its proper divisors (1366295).

4042345 is a wasteful number, since it uses less digits than its factorization.

4042345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 4042345 is about 2010.5583801521. The cubic root of 4042345 is about 159.2982942428.

Adding to 4042345 its reverse (5432404), we get a palindrome (9474749).

The spelling of 4042345 in words is "four million, forty-two thousand, three hundred forty-five".