42351345 has 36 divisors (see below), whose sum is σ = 75303540. Its totient is φ = 22018752.

The previous prime is 42351343. The next prime is 42351359. The reversal of 42351345 is 54315324.

42351345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 25310961 + 17040384 = 5031^2 + 4128^2 .

It is not a de Polignac number, because 42351345 - 2¹ = 42351343 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42351343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 82951 + ... + 83459.

It is an arithmetic number, because the mean of its divisors is an integer number (2091765).

Almost surely, 2^42351345 is an apocalyptic number.

42351345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42351345 is a deficient number, since it is larger than the sum of its proper divisors (32952195).

42351345 is a wasteful number, since it uses less digits than its factorization.

42351345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 560 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 42351345 is about 6507.7910999048. The cubic root of 42351345 is about 348.5692476844.

Adding to 42351345 its reverse (54315324), we get a palindrome (96666669).

The spelling of 42351345 in words is "forty-two million, three hundred fifty-one thousand, three hundred forty-five".