42403403 has 8 divisors (see below), whose sum is σ = 48561408. Its totient is φ = 36270504.

The previous prime is 42403399. The next prime is 42403409. The reversal of 42403403 is 30430424.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42403403 - 2² = 42403399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42403409) 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, 2501 + ... + 9542.

It is an arithmetic number, because the mean of its divisors is an integer number (6070176).

Almost surely, 2^42403403 is an apocalyptic number.

42403403 is a deficient number, since it is larger than the sum of its proper divisors (6158005).

42403403 is a wasteful number, since it uses less digits than its factorization.

42403403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 42403403 is about 6511.7895389824. The cubic root of 42403403 is about 348.7120088967.

Adding to 42403403 its reverse (30430424), we get a palindrome (72833827).

The spelling of 42403403 in words is "forty-two million, four hundred three thousand, four hundred three".