42305403 has 16 divisors (see below), whose sum is σ = 66689280. Its totient is φ = 23340576.

The previous prime is 42305383. The next prime is 42305423. The reversal of 42305403 is 30450324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42305383) and next prime (42305423).

It is not a de Polignac number, because 42305403 - 2¹⁶ = 42239867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 42305403.

It is not an unprimeable number, because it can be changed into a prime (42305423) 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, 34125 + ... + 35342.

It is an arithmetic number, because the mean of its divisors is an integer number (4168080).

Almost surely, 2^42305403 is an apocalyptic number.

42305403 is a deficient number, since it is larger than the sum of its proper divisors (24383877).

42305403 is a wasteful number, since it uses less digits than its factorization.

42305403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69506.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 42305403 is about 6504.2603730171. The cubic root of 42305403 is about 348.4431614690.

Adding to 42305403 its reverse (30450324), we get a palindrome (72755727).

The spelling of 42305403 in words is "forty-two million, three hundred five thousand, four hundred three".