42403345 has 16 divisors (see below), whose sum is σ = 53922240. Its totient is φ = 31921344.

The previous prime is 42403343. The next prime is 42403379. The reversal of 42403345 is 54330424.

It is a cyclic number.

It is not a de Polignac number, because 42403345 - 2¹ = 42403343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42403343) 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, 13494 + ... + 16336.

It is an arithmetic number, because the mean of its divisors is an integer number (3370140).

Almost surely, 2^42403345 is an apocalyptic number.

It is an amenable number.

42403345 is a deficient number, since it is larger than the sum of its proper divisors (11518895).

42403345 is a wasteful number, since it uses less digits than its factorization.

42403345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 42403345 is about 6511.7850855199. The cubic root of 42403345 is about 348.7118499055.

Adding to 42403345 its reverse (54330424), we get a palindrome (96733769).

The spelling of 42403345 in words is "forty-two million, four hundred three thousand, three hundred forty-five".