42503906 has 8 divisors (see below), whose sum is σ = 63887184. Its totient is φ = 21208180.

The previous prime is 42503897. The next prime is 42503939. The reversal of 42503906 is 60930524.

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

It is an unprimeable number.

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, 20660 + ... + 22623.

It is an arithmetic number, because the mean of its divisors is an integer number (7985898).

Almost surely, 2^42503906 is an apocalyptic number.

42503906 is a deficient number, since it is larger than the sum of its proper divisors (21383278).

42503906 is a wasteful number, since it uses less digits than its factorization.

42503906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43776.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 42503906 is about 6519.5019748444. The cubic root of 42503906 is about 348.9872930188.

The spelling of 42503906 in words is "forty-two million, five hundred three thousand, nine hundred six".