42020403 has 8 divisors (see below), whose sum is σ = 56092608. Its totient is φ = 27980904.

The previous prime is 42020393. The next prime is 42020437. The reversal of 42020403 is 30402024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42020403 - 2⁴ = 42020387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42020483) 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 7 ways as a sum of consecutive naturals, for example, 5001 + ... + 10442.

It is an arithmetic number, because the mean of its divisors is an integer number (7011576).

Almost surely, 2^42020403 is an apocalyptic number.

42020403 is a deficient number, since it is larger than the sum of its proper divisors (14072205).

42020403 is a wasteful number, since it uses less digits than its factorization.

42020403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16353.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 42020403 is about 6482.3146329070. The cubic root of 42020403 is about 347.6589421795.

Adding to 42020403 its reverse (30402024), we get a palindrome (72422427).

The spelling of 42020403 in words is "forty-two million, twenty thousand, four hundred three".