42013403 has 4 divisors (see below), whose sum is σ = 42334248. Its totient is φ = 41692560.

The previous prime is 42013399. The next prime is 42013417. The reversal of 42013403 is 30431024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42013403 - 2² = 42013399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160226 + ... + 160487.

It is an arithmetic number, because the mean of its divisors is an integer number (10583562).

Almost surely, 2^42013403 is an apocalyptic number.

42013403 is a deficient number, since it is larger than the sum of its proper divisors (320845).

42013403 is a wasteful number, since it uses less digits than its factorization.

42013403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320844.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42013403 is about 6481.7746798234. The cubic root of 42013403 is about 347.6396360999.

Adding to 42013403 its reverse (30431024), we get a palindrome (72444427).

The spelling of 42013403 in words is "forty-two million, thirteen thousand, four hundred three".